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Finding the Fourth Proportional to 318,718.17, 477,965.85 and 94,018.98

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Solution

The fourth proportional to 318,718.17, 477,965.85 and 94,018.98 is: 140,995.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,718.17 : 477,965.85 = 94,018.98 : x
  2. Step 2: Convert to fraction form
    318,718.17/477,965.85 = 94,018.98/x
  3. Step 3: Cross multiply
    318,718.17x = 477,965.85 × 94,018.98
  4. Step 4: Simplify right side
    318,718.17x = 44,937,861,691.83
  5. Step 5: Solve for x
    x = 44,937,861,691.83/318,718.17
  6. Step 6: Final answer
    x = 140,995.61

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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.