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Finding the Fourth Proportional to 58,006.80, 86,937.30 and 28,360.80

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Solution

The fourth proportional to 58,006.80, 86,937.30 and 28,360.80 is: 42,505.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,006.80 : 86,937.30 = 28,360.80 : x
  2. Step 2: Convert to fraction form
    58,006.80/86,937.30 = 28,360.80/x
  3. Step 3: Cross multiply
    58,006.80x = 86,937.30 × 28,360.80
  4. Step 4: Simplify right side
    58,006.80x = 2,465,611,377.84
  5. Step 5: Solve for x
    x = 2,465,611,377.84/58,006.80
  6. Step 6: Final answer
    x = 42,505.56

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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.