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Finding the Fourth Proportional to 663,249.69, 915,024.75 and 408,158.01

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Solution

The fourth proportional to 663,249.69, 915,024.75 and 408,158.01 is: 563,098.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,249.69 : 915,024.75 = 408,158.01 : x
  2. Step 2: Convert to fraction form
    663,249.69/915,024.75 = 408,158.01/x
  3. Step 3: Cross multiply
    663,249.69x = 915,024.75 × 408,158.01
  4. Step 4: Simplify right side
    663,249.69x = 373,474,681,060.75
  5. Step 5: Solve for x
    x = 373,474,681,060.75/663,249.69
  6. Step 6: Final answer
    x = 563,098.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.