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Finding the Fourth Proportional to 133,057,646.80, 199,614,463.80 and 42,190,421.20

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Solution

The fourth proportional to 133,057,646.80, 199,614,463.80 and 42,190,421.20 is: 63,294,508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,057,646.80 : 199,614,463.80 = 42,190,421.20 : x
  2. Step 2: Convert to fraction form
    133,057,646.80/199,614,463.80 = 42,190,421.20/x
  3. Step 3: Cross multiply
    133,057,646.80x = 199,614,463.80 × 42,190,421.20
  4. Step 4: Simplify right side
    133,057,646.80x = 8,421,818,305,334,154
  5. Step 5: Solve for x
    x = 8,421,818,305,334,154/133,057,646.80
  6. Step 6: Final answer
    x = 63,294,508.12

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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.