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Finding the Fourth Proportional to 108,006,866.50, 149,001,978.12 and 63,330,034.28

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Solution

The fourth proportional to 108,006,866.50, 149,001,978.12 and 63,330,034.28 is: 87,367,596.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,006,866.50 : 149,001,978.12 = 63,330,034.28 : x
  2. Step 2: Convert to fraction form
    108,006,866.50/149,001,978.12 = 63,330,034.28/x
  3. Step 3: Cross multiply
    108,006,866.50x = 149,001,978.12 × 63,330,034.28
  4. Step 4: Simplify right side
    108,006,866.50x = 9,436,300,382,127,410
  5. Step 5: Solve for x
    x = 9,436,300,382,127,410/108,006,866.50
  6. Step 6: Final answer
    x = 87,367,596.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.