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Finding the Fourth Proportional to 78,699.80, 118,049.70 and 23,295.80

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Solution

The fourth proportional to 78,699.80, 118,049.70 and 23,295.80 is: 34,943.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,699.80 : 118,049.70 = 23,295.80 : x
  2. Step 2: Convert to fraction form
    78,699.80/118,049.70 = 23,295.80/x
  3. Step 3: Cross multiply
    78,699.80x = 118,049.70 × 23,295.80
  4. Step 4: Simplify right side
    78,699.80x = 2,750,062,201.26
  5. Step 5: Solve for x
    x = 2,750,062,201.26/78,699.80
  6. Step 6: Final answer
    x = 34,943.70

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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.