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Finding the Fourth Proportional to 69,088.60, 103,632.90 and 52,499.80

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Solution

The fourth proportional to 69,088.60, 103,632.90 and 52,499.80 is: 78,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,088.60 : 103,632.90 = 52,499.80 : x
  2. Step 2: Convert to fraction form
    69,088.60/103,632.90 = 52,499.80/x
  3. Step 3: Cross multiply
    69,088.60x = 103,632.90 × 52,499.80
  4. Step 4: Simplify right side
    69,088.60x = 5,440,706,523.42
  5. Step 5: Solve for x
    x = 5,440,706,523.42/69,088.60
  6. Step 6: Final answer
    x = 78,749.70

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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.