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Finding the Fourth Proportional to 63,789,843.60, 95,698,762.20 and 20,661,037.20

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Solution

The fourth proportional to 63,789,843.60, 95,698,762.20 and 20,661,037.20 is: 30,996,089.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,789,843.60 : 95,698,762.20 = 20,661,037.20 : x
  2. Step 2: Convert to fraction form
    63,789,843.60/95,698,762.20 = 20,661,037.20/x
  3. Step 3: Cross multiply
    63,789,843.60x = 95,698,762.20 × 20,661,037.20
  4. Step 4: Simplify right side
    63,789,843.60x = 1,977,235,685,808,153.75
  5. Step 5: Solve for x
    x = 1,977,235,685,808,153.75/63,789,843.60
  6. Step 6: Final answer
    x = 30,996,089.26

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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.