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Finding the Fourth Proportional to 79,872,092.80, 119,808,139.20 and 52,976,118.40

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Solution

The fourth proportional to 79,872,092.80, 119,808,139.20 and 52,976,118.40 is: 79,464,177.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,872,092.80 : 119,808,139.20 = 52,976,118.40 : x
  2. Step 2: Convert to fraction form
    79,872,092.80/119,808,139.20 = 52,976,118.40/x
  3. Step 3: Cross multiply
    79,872,092.80x = 119,808,139.20 × 52,976,118.40
  4. Step 4: Simplify right side
    79,872,092.80x = 6,346,970,167,542,881
  5. Step 5: Solve for x
    x = 6,346,970,167,542,881/79,872,092.80
  6. Step 6: Final answer
    x = 79,464,177.60

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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.