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Finding the Fourth Proportional to 124,489,412.80, 186,734,119.20 and 79,251,755.20

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Solution

The fourth proportional to 124,489,412.80, 186,734,119.20 and 79,251,755.20 is: 118,877,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,489,412.80 : 186,734,119.20 = 79,251,755.20 : x
  2. Step 2: Convert to fraction form
    124,489,412.80/186,734,119.20 = 79,251,755.20/x
  3. Step 3: Cross multiply
    124,489,412.80x = 186,734,119.20 × 79,251,755.20
  4. Step 4: Simplify right side
    124,489,412.80x = 14,799,006,702,326,020
  5. Step 5: Solve for x
    x = 14,799,006,702,326,020/124,489,412.80
  6. Step 6: Final answer
    x = 118,877,632.80

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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.