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Finding the Fourth Proportional to 103,688.55, 155,493.95 and 44,493.75

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Solution

The fourth proportional to 103,688.55, 155,493.95 and 44,493.75 is: 66,723.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,688.55 : 155,493.95 = 44,493.75 : x
  2. Step 2: Convert to fraction form
    103,688.55/155,493.95 = 44,493.75/x
  3. Step 3: Cross multiply
    103,688.55x = 155,493.95 × 44,493.75
  4. Step 4: Simplify right side
    103,688.55x = 6,918,508,715.34
  5. Step 5: Solve for x
    x = 6,918,508,715.34/103,688.55
  6. Step 6: Final answer
    x = 66,723.94

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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.