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Finding the Fourth Proportional to 363,892.20, 545,643.90 and 127,242.60

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Solution

The fourth proportional to 363,892.20, 545,643.90 and 127,242.60 is: 190,795.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,892.20 : 545,643.90 = 127,242.60 : x
  2. Step 2: Convert to fraction form
    363,892.20/545,643.90 = 127,242.60/x
  3. Step 3: Cross multiply
    363,892.20x = 545,643.90 × 127,242.60
  4. Step 4: Simplify right side
    363,892.20x = 69,429,148,510.14
  5. Step 5: Solve for x
    x = 69,429,148,510.14/363,892.20
  6. Step 6: Final answer
    x = 190,795.92

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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.