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Finding the Fourth Proportional to 907,319,593.28, 1,358,988,384 and 750,091,465.28

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Solution

The fourth proportional to 907,319,593.28, 1,358,988,384 and 750,091,465.28 is: 1,123,491,210.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,319,593.28 : 1,358,988,384 = 750,091,465.28 : x
  2. Step 2: Convert to fraction form
    907,319,593.28/1,358,988,384 = 750,091,465.28/x
  3. Step 3: Cross multiply
    907,319,593.28x = 1,358,988,384 × 750,091,465.28
  4. Step 4: Simplify right side
    907,319,593.28x = 1,019,365,588,253,059,328
  5. Step 5: Solve for x
    x = 1,019,365,588,253,059,328/907,319,593.28
  6. Step 6: Final answer
    x = 1,123,491,210.60

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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.