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Finding the Fourth Proportional to 318,679.68, 478,101.54 and 94,031.04

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Solution

The fourth proportional to 318,679.68, 478,101.54 and 94,031.04 is: 141,070.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,679.68 : 478,101.54 = 94,031.04 : x
  2. Step 2: Convert to fraction form
    318,679.68/478,101.54 = 94,031.04/x
  3. Step 3: Cross multiply
    318,679.68x = 478,101.54 × 94,031.04
  4. Step 4: Simplify right side
    318,679.68x = 44,956,385,031.80
  5. Step 5: Solve for x
    x = 44,956,385,031.80/318,679.68
  6. Step 6: Final answer
    x = 141,070.76

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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.