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Finding the Fourth Proportional to 58,787.70, 81,129.84 and 36,127.62

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Solution

The fourth proportional to 58,787.70, 81,129.84 and 36,127.62 is: 49,857.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,787.70 : 81,129.84 = 36,127.62 : x
  2. Step 2: Convert to fraction form
    58,787.70/81,129.84 = 36,127.62/x
  3. Step 3: Cross multiply
    58,787.70x = 81,129.84 × 36,127.62
  4. Step 4: Simplify right side
    58,787.70x = 2,931,028,030.18
  5. Step 5: Solve for x
    x = 2,931,028,030.18/58,787.70
  6. Step 6: Final answer
    x = 49,857.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.