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Finding the Fourth Proportional to 103,909.16, 155,922.13 and 56,527.56

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Solution

The fourth proportional to 103,909.16, 155,922.13 and 56,527.56 is: 84,823.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,909.16 : 155,922.13 = 56,527.56 : x
  2. Step 2: Convert to fraction form
    103,909.16/155,922.13 = 56,527.56/x
  3. Step 3: Cross multiply
    103,909.16x = 155,922.13 × 56,527.56
  4. Step 4: Simplify right side
    103,909.16x = 8,813,897,829.62
  5. Step 5: Solve for x
    x = 8,813,897,829.62/103,909.16
  6. Step 6: Final answer
    x = 84,823.11

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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.