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Finding the Fourth Proportional to 58,043.28, 87,062.40 and 18,602.40

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Solution

The fourth proportional to 58,043.28, 87,062.40 and 18,602.40 is: 27,902.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,043.28 : 87,062.40 = 18,602.40 : x
  2. Step 2: Convert to fraction form
    58,043.28/87,062.40 = 18,602.40/x
  3. Step 3: Cross multiply
    58,043.28x = 87,062.40 × 18,602.40
  4. Step 4: Simplify right side
    58,043.28x = 1,619,569,589.76
  5. Step 5: Solve for x
    x = 1,619,569,589.76/58,043.28
  6. Step 6: Final answer
    x = 27,902.79

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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.