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Finding the Fourth Proportional to 70,061.84, 104,925.72 and 38,819.60

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Solution

The fourth proportional to 70,061.84, 104,925.72 and 38,819.60 is: 58,136.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,061.84 : 104,925.72 = 38,819.60 : x
  2. Step 2: Convert to fraction form
    70,061.84/104,925.72 = 38,819.60/x
  3. Step 3: Cross multiply
    70,061.84x = 104,925.72 × 38,819.60
  4. Step 4: Simplify right side
    70,061.84x = 4,073,174,480.11
  5. Step 5: Solve for x
    x = 4,073,174,480.11/70,061.84
  6. Step 6: Final answer
    x = 58,136.85

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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.