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Finding the Fourth Proportional to 58,489.83, 87,690 and 48,463.80

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Solution

The fourth proportional to 58,489.83, 87,690 and 48,463.80 is: 72,658.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,489.83 : 87,690 = 48,463.80 : x
  2. Step 2: Convert to fraction form
    58,489.83/87,690 = 48,463.80/x
  3. Step 3: Cross multiply
    58,489.83x = 87,690 × 48,463.80
  4. Step 4: Simplify right side
    58,489.83x = 4,249,790,622.00
  5. Step 5: Solve for x
    x = 4,249,790,622.00/58,489.83
  6. Step 6: Final answer
    x = 72,658.62

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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.