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Finding the Fourth Proportional to 58,528, 87,792.96 and 16,979.20

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Solution

The fourth proportional to 58,528, 87,792.96 and 16,979.20 is: 25,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,528 : 87,792.96 = 16,979.20 : x
  2. Step 2: Convert to fraction form
    58,528/87,792.96 = 16,979.20/x
  3. Step 3: Cross multiply
    58,528x = 87,792.96 × 16,979.20
  4. Step 4: Simplify right side
    58,528x = 1,490,654,226.43
  5. Step 5: Solve for x
    x = 1,490,654,226.43/58,528
  6. Step 6: Final answer
    x = 25,469.08

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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.