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Finding the Fourth Proportional to 447,418.86, 671,129.67 and 110,459.55

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Solution

The fourth proportional to 447,418.86, 671,129.67 and 110,459.55 is: 165,689.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,418.86 : 671,129.67 = 110,459.55 : x
  2. Step 2: Convert to fraction form
    447,418.86/671,129.67 = 110,459.55/x
  3. Step 3: Cross multiply
    447,418.86x = 671,129.67 × 110,459.55
  4. Step 4: Simplify right side
    447,418.86x = 74,132,680,639.01
  5. Step 5: Solve for x
    x = 74,132,680,639.01/447,418.86
  6. Step 6: Final answer
    x = 165,689.66

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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.