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Finding the Fourth Proportional to 363,594.28, 545,420.54 and 126,931.72

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Solution

The fourth proportional to 363,594.28, 545,420.54 and 126,931.72 is: 190,407.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,594.28 : 545,420.54 = 126,931.72 : x
  2. Step 2: Convert to fraction form
    363,594.28/545,420.54 = 126,931.72/x
  3. Step 3: Cross multiply
    363,594.28x = 545,420.54 × 126,931.72
  4. Step 4: Simplify right side
    363,594.28x = 69,231,167,265.53
  5. Step 5: Solve for x
    x = 69,231,167,265.53/363,594.28
  6. Step 6: Final answer
    x = 190,407.75

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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.