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Finding the Fourth Proportional to 58,592.40, 87,856.20 and 19,129.20

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Solution

The fourth proportional to 58,592.40, 87,856.20 and 19,129.20 is: 28,683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,592.40 : 87,856.20 = 19,129.20 : x
  2. Step 2: Convert to fraction form
    58,592.40/87,856.20 = 19,129.20/x
  3. Step 3: Cross multiply
    58,592.40x = 87,856.20 × 19,129.20
  4. Step 4: Simplify right side
    58,592.40x = 1,680,618,821.04
  5. Step 5: Solve for x
    x = 1,680,618,821.04/58,592.40
  6. Step 6: Final answer
    x = 28,683.22

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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.