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Finding the Fourth Proportional to 74,487,805.20, 111,731,707.80 and 36,224,053.20

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Solution

The fourth proportional to 74,487,805.20, 111,731,707.80 and 36,224,053.20 is: 54,336,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,487,805.20 : 111,731,707.80 = 36,224,053.20 : x
  2. Step 2: Convert to fraction form
    74,487,805.20/111,731,707.80 = 36,224,053.20/x
  3. Step 3: Cross multiply
    74,487,805.20x = 111,731,707.80 × 36,224,053.20
  4. Step 4: Simplify right side
    74,487,805.20x = 4,047,375,327,474,055
  5. Step 5: Solve for x
    x = 4,047,375,327,474,055/74,487,805.20
  6. Step 6: Final answer
    x = 54,336,079.80

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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.