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Finding the Fourth Proportional to 58,370.88, 87,564.96 and 21,432

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Solution

The fourth proportional to 58,370.88, 87,564.96 and 21,432 is: 32,151.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,370.88 : 87,564.96 = 21,432 : x
  2. Step 2: Convert to fraction form
    58,370.88/87,564.96 = 21,432/x
  3. Step 3: Cross multiply
    58,370.88x = 87,564.96 × 21,432
  4. Step 4: Simplify right side
    58,370.88x = 1,876,692,222.72
  5. Step 5: Solve for x
    x = 1,876,692,222.72/58,370.88
  6. Step 6: Final answer
    x = 32,151.17

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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.