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Finding the Fourth Proportional to 58,355.38, 87,510.93 and 18,901.90

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Solution

The fourth proportional to 58,355.38, 87,510.93 and 18,901.90 is: 28,345.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,355.38 : 87,510.93 = 18,901.90 : x
  2. Step 2: Convert to fraction form
    58,355.38/87,510.93 = 18,901.90/x
  3. Step 3: Cross multiply
    58,355.38x = 87,510.93 × 18,901.90
  4. Step 4: Simplify right side
    58,355.38x = 1,654,122,847.77
  5. Step 5: Solve for x
    x = 1,654,122,847.77/58,355.38
  6. Step 6: Final answer
    x = 28,345.68

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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.