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Finding the Fourth Proportional to 123,489.70, 185,234.55 and 34,746.10

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Solution

The fourth proportional to 123,489.70, 185,234.55 and 34,746.10 is: 52,119.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,489.70 : 185,234.55 = 34,746.10 : x
  2. Step 2: Convert to fraction form
    123,489.70/185,234.55 = 34,746.10/x
  3. Step 3: Cross multiply
    123,489.70x = 185,234.55 × 34,746.10
  4. Step 4: Simplify right side
    123,489.70x = 6,436,178,197.76
  5. Step 5: Solve for x
    x = 6,436,178,197.76/123,489.70
  6. Step 6: Final answer
    x = 52,119.15

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1.5x scale

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.