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Finding the Fourth Proportional to 363,742.60, 545,108.16 and 316,260.40

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Solution

The fourth proportional to 363,742.60, 545,108.16 and 316,260.40 is: 473,950.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,742.60 : 545,108.16 = 316,260.40 : x
  2. Step 2: Convert to fraction form
    363,742.60/545,108.16 = 316,260.40/x
  3. Step 3: Cross multiply
    363,742.60x = 545,108.16 × 316,260.40
  4. Step 4: Simplify right side
    363,742.60x = 172,396,124,724.86
  5. Step 5: Solve for x
    x = 172,396,124,724.86/363,742.60
  6. Step 6: Final answer
    x = 473,950.88

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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.