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Finding the Fourth Proportional to 92,330.78, 138,510.99 and 39,023.30

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Solution

The fourth proportional to 92,330.78, 138,510.99 and 39,023.30 is: 58,541.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,330.78 : 138,510.99 = 39,023.30 : x
  2. Step 2: Convert to fraction form
    92,330.78/138,510.99 = 39,023.30/x
  3. Step 3: Cross multiply
    92,330.78x = 138,510.99 × 39,023.30
  4. Step 4: Simplify right side
    92,330.78x = 5,405,156,262.34
  5. Step 5: Solve for x
    x = 5,405,156,262.34/92,330.78
  6. Step 6: Final answer
    x = 58,541.22

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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.