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Finding the Fourth Proportional to 91,715.20, 137,492.80 and 35,593.60

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Solution

The fourth proportional to 91,715.20, 137,492.80 and 35,593.60 is: 53,359.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,715.20 : 137,492.80 = 35,593.60 : x
  2. Step 2: Convert to fraction form
    91,715.20/137,492.80 = 35,593.60/x
  3. Step 3: Cross multiply
    91,715.20x = 137,492.80 × 35,593.60
  4. Step 4: Simplify right side
    91,715.20x = 4,893,863,726.08
  5. Step 5: Solve for x
    x = 4,893,863,726.08/91,715.20
  6. Step 6: Final answer
    x = 53,359.35

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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.