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Finding the Fourth Proportional to 99,652,111.80, 149,478,167.70 and 74,142,943.80

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Solution

The fourth proportional to 99,652,111.80, 149,478,167.70 and 74,142,943.80 is: 111,214,415.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,652,111.80 : 149,478,167.70 = 74,142,943.80 : x
  2. Step 2: Convert to fraction form
    99,652,111.80/149,478,167.70 = 74,142,943.80/x
  3. Step 3: Cross multiply
    99,652,111.80x = 149,478,167.70 × 74,142,943.80
  4. Step 4: Simplify right side
    99,652,111.80x = 11,082,751,387,108,074
  5. Step 5: Solve for x
    x = 11,082,751,387,108,074/99,652,111.80
  6. Step 6: Final answer
    x = 111,214,415.70

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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.