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Finding the Fourth Proportional to 63,298.73, 87,390.16 and 39,457.71

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Solution

The fourth proportional to 63,298.73, 87,390.16 and 39,457.71 is: 54,475.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,298.73 : 87,390.16 = 39,457.71 : x
  2. Step 2: Convert to fraction form
    63,298.73/87,390.16 = 39,457.71/x
  3. Step 3: Cross multiply
    63,298.73x = 87,390.16 × 39,457.71
  4. Step 4: Simplify right side
    63,298.73x = 3,448,215,491.49
  5. Step 5: Solve for x
    x = 3,448,215,491.49/63,298.73
  6. Step 6: Final answer
    x = 54,475.27

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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.