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Finding the Fourth Proportional to 605,179,938.80, 907,769,908.20 and 605,179,938.80

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Solution

The fourth proportional to 605,179,938.80, 907,769,908.20 and 605,179,938.80 is: 907,769,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,179,938.80 : 907,769,908.20 = 605,179,938.80 : x
  2. Step 2: Convert to fraction form
    605,179,938.80/907,769,908.20 = 605,179,938.80/x
  3. Step 3: Cross multiply
    605,179,938.80x = 907,769,908.20 × 605,179,938.80
  4. Step 4: Simplify right side
    605,179,938.80x = 549,364,137,488,957,632
  5. Step 5: Solve for x
    x = 549,364,137,488,957,632/605,179,938.80
  6. Step 6: Final answer
    x = 907,769,908.20

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Double scale
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Similar ratio
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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.