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Finding the Fourth Proportional to 426,752.01, 640,120.68 and 127,234.13

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Solution

The fourth proportional to 426,752.01, 640,120.68 and 127,234.13 is: 190,849.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,752.01 : 640,120.68 = 127,234.13 : x
  2. Step 2: Convert to fraction form
    426,752.01/640,120.68 = 127,234.13/x
  3. Step 3: Cross multiply
    426,752.01x = 640,120.68 × 127,234.13
  4. Step 4: Simplify right side
    426,752.01x = 81,445,194,614.21
  5. Step 5: Solve for x
    x = 81,445,194,614.21/426,752.01
  6. Step 6: Final answer
    x = 190,849.00

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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.