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Finding the Fourth Proportional to 418,882.56, 623,585.82 and 416,391.36

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Solution

The fourth proportional to 418,882.56, 623,585.82 and 416,391.36 is: 619,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,882.56 : 623,585.82 = 416,391.36 : x
  2. Step 2: Convert to fraction form
    418,882.56/623,585.82 = 416,391.36/x
  3. Step 3: Cross multiply
    418,882.56x = 623,585.82 × 416,391.36
  4. Step 4: Simplify right side
    418,882.56x = 259,655,747,666.52
  5. Step 5: Solve for x
    x = 259,655,747,666.52/418,882.56
  6. Step 6: Final answer
    x = 619,877.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.