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Finding the Fourth Proportional to 63,789,838.60, 95,698,754.70 and 20,661,032.20

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Solution

The fourth proportional to 63,789,838.60, 95,698,754.70 and 20,661,032.20 is: 30,996,081.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,789,838.60 : 95,698,754.70 = 20,661,032.20 : x
  2. Step 2: Convert to fraction form
    63,789,838.60/95,698,754.70 = 20,661,032.20/x
  3. Step 3: Cross multiply
    63,789,838.60x = 95,698,754.70 × 20,661,032.20
  4. Step 4: Simplify right side
    63,789,838.60x = 1,977,235,052,356,601.25
  5. Step 5: Solve for x
    x = 1,977,235,052,356,601.25/63,789,838.60
  6. Step 6: Final answer
    x = 30,996,081.75

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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.