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Finding the Fourth Proportional to 64,000.40, 95,781.90 and 56,127.20

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Solution

The fourth proportional to 64,000.40, 95,781.90 and 56,127.20 is: 83,999.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,000.40 : 95,781.90 = 56,127.20 : x
  2. Step 2: Convert to fraction form
    64,000.40/95,781.90 = 56,127.20/x
  3. Step 3: Cross multiply
    64,000.40x = 95,781.90 × 56,127.20
  4. Step 4: Simplify right side
    64,000.40x = 5,375,969,857.68
  5. Step 5: Solve for x
    x = 5,375,969,857.68/64,000.40
  6. Step 6: Final answer
    x = 83,999.00

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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.