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Finding the Fourth Proportional to 119,121,046.20, 178,681,569.30 and 119,121,046.20

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Solution

The fourth proportional to 119,121,046.20, 178,681,569.30 and 119,121,046.20 is: 178,681,569.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,121,046.20 : 178,681,569.30 = 119,121,046.20 : x
  2. Step 2: Convert to fraction form
    119,121,046.20/178,681,569.30 = 119,121,046.20/x
  3. Step 3: Cross multiply
    119,121,046.20x = 178,681,569.30 × 119,121,046.20
  4. Step 4: Simplify right side
    119,121,046.20x = 21,284,735,471,673,804
  5. Step 5: Solve for x
    x = 21,284,735,471,673,804/119,121,046.20
  6. Step 6: Final answer
    x = 178,681,569.30

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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.