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Finding the Fourth Proportional to 75,374.40, 113,061.60 and 42,606.40

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Solution

The fourth proportional to 75,374.40, 113,061.60 and 42,606.40 is: 63,909.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,374.40 : 113,061.60 = 42,606.40 : x
  2. Step 2: Convert to fraction form
    75,374.40/113,061.60 = 42,606.40/x
  3. Step 3: Cross multiply
    75,374.40x = 113,061.60 × 42,606.40
  4. Step 4: Simplify right side
    75,374.40x = 4,817,147,754.24
  5. Step 5: Solve for x
    x = 4,817,147,754.24/75,374.40
  6. Step 6: Final answer
    x = 63,909.60

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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.