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Finding the Fourth Proportional to 363,748.60, 545,117.16 and 316,266.40

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Solution

The fourth proportional to 363,748.60, 545,117.16 and 316,266.40 is: 473,959.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,748.60 : 545,117.16 = 316,266.40 : x
  2. Step 2: Convert to fraction form
    363,748.60/545,117.16 = 316,266.40/x
  3. Step 3: Cross multiply
    363,748.60x = 545,117.16 × 316,266.40
  4. Step 4: Simplify right side
    363,748.60x = 172,402,241,771.42
  5. Step 5: Solve for x
    x = 172,402,241,771.42/363,748.60
  6. Step 6: Final answer
    x = 473,959.88

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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.