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Finding the Fourth Proportional to 103,562.31, 155,358.84 and 32,490.79

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Solution

The fourth proportional to 103,562.31, 155,358.84 and 32,490.79 is: 48,741.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,562.31 : 155,358.84 = 32,490.79 : x
  2. Step 2: Convert to fraction form
    103,562.31/155,358.84 = 32,490.79/x
  3. Step 3: Cross multiply
    103,562.31x = 155,358.84 × 32,490.79
  4. Step 4: Simplify right side
    103,562.31x = 5,047,731,437.70
  5. Step 5: Solve for x
    x = 5,047,731,437.70/103,562.31
  6. Step 6: Final answer
    x = 48,741.01

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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.