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Finding the Fourth Proportional to 121,291,801.80, 181,813,699.80 and 59,786,363.40

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Solution

The fourth proportional to 121,291,801.80, 181,813,699.80 and 59,786,363.40 is: 89,618,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,291,801.80 : 181,813,699.80 = 59,786,363.40 : x
  2. Step 2: Convert to fraction form
    121,291,801.80/181,813,699.80 = 59,786,363.40/x
  3. Step 3: Cross multiply
    121,291,801.80x = 181,813,699.80 × 59,786,363.40
  4. Step 4: Simplify right side
    121,291,801.80x = 10,869,979,927,341,308
  5. Step 5: Solve for x
    x = 10,869,979,927,341,308/121,291,801.80
  6. Step 6: Final answer
    x = 89,618,422.40

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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.