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Finding the Fourth Proportional to 58,881.78, 88,360.11 and 21,438.18

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Solution

The fourth proportional to 58,881.78, 88,360.11 and 21,438.18 is: 32,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,881.78 : 88,360.11 = 21,438.18 : x
  2. Step 2: Convert to fraction form
    58,881.78/88,360.11 = 21,438.18/x
  3. Step 3: Cross multiply
    58,881.78x = 88,360.11 × 21,438.18
  4. Step 4: Simplify right side
    58,881.78x = 1,894,279,943.00
  5. Step 5: Solve for x
    x = 1,894,279,943.00/58,881.78
  6. Step 6: Final answer
    x = 32,170.90

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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.