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Finding the Fourth Proportional to 70,371.64, 105,517.50 and 62,070.76

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Solution

The fourth proportional to 70,371.64, 105,517.50 and 62,070.76 is: 93,070.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,371.64 : 105,517.50 = 62,070.76 : x
  2. Step 2: Convert to fraction form
    70,371.64/105,517.50 = 62,070.76/x
  3. Step 3: Cross multiply
    70,371.64x = 105,517.50 × 62,070.76
  4. Step 4: Simplify right side
    70,371.64x = 6,549,551,418.30
  5. Step 5: Solve for x
    x = 6,549,551,418.30/70,371.64
  6. Step 6: Final answer
    x = 93,070.89

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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.