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Finding the Fourth Proportional to 58,543.80, 87,815.70 and 28,982.40

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Solution

The fourth proportional to 58,543.80, 87,815.70 and 28,982.40 is: 43,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,543.80 : 87,815.70 = 28,982.40 : x
  2. Step 2: Convert to fraction form
    58,543.80/87,815.70 = 28,982.40/x
  3. Step 3: Cross multiply
    58,543.80x = 87,815.70 × 28,982.40
  4. Step 4: Simplify right side
    58,543.80x = 2,545,109,743.68
  5. Step 5: Solve for x
    x = 2,545,109,743.68/58,543.80
  6. Step 6: Final answer
    x = 43,473.60

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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.