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Finding the Fourth Proportional to 85,000.65, 127,414.89 and 42,753.06

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Solution

The fourth proportional to 85,000.65, 127,414.89 and 42,753.06 is: 64,086.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,000.65 : 127,414.89 = 42,753.06 : x
  2. Step 2: Convert to fraction form
    85,000.65/127,414.89 = 42,753.06/x
  3. Step 3: Cross multiply
    85,000.65x = 127,414.89 × 42,753.06
  4. Step 4: Simplify right side
    85,000.65x = 5,447,376,437.06
  5. Step 5: Solve for x
    x = 5,447,376,437.06/85,000.65
  6. Step 6: Final answer
    x = 64,086.29

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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.