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Finding the Fourth Proportional to 78,288,770,531.80, 117,433,155,797.70 and 78,288,770,531.80

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Solution

The fourth proportional to 78,288,770,531.80, 117,433,155,797.70 and 78,288,770,531.80 is: 117,433,155,797.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,288,770,531.80 : 117,433,155,797.70 = 78,288,770,531.80 : x
  2. Step 2: Convert to fraction form
    78,288,770,531.80/117,433,155,797.70 = 78,288,770,531.80/x
  3. Step 3: Cross multiply
    78,288,770,531.80x = 117,433,155,797.70 × 78,288,770,531.80
  4. Step 4: Simplify right side
    78,288,770,531.80x = 9,193,697,387,071,254,036,480
  5. Step 5: Solve for x
    x = 9,193,697,387,071,254,036,480/78,288,770,531.80
  6. Step 6: Final answer
    x = 117,433,155,797.70

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.