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Finding the Fourth Proportional to 93,872.40, 140,849.10 and 54,463.20

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Solution

The fourth proportional to 93,872.40, 140,849.10 and 54,463.20 is: 81,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,872.40 : 140,849.10 = 54,463.20 : x
  2. Step 2: Convert to fraction form
    93,872.40/140,849.10 = 54,463.20/x
  3. Step 3: Cross multiply
    93,872.40x = 140,849.10 × 54,463.20
  4. Step 4: Simplify right side
    93,872.40x = 7,671,092,703.12
  5. Step 5: Solve for x
    x = 7,671,092,703.12/93,872.40
  6. Step 6: Final answer
    x = 81,718.30

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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.