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Finding the Fourth Proportional to 361,607.20, 542,410.80 and 249,632.80

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Solution

The fourth proportional to 361,607.20, 542,410.80 and 249,632.80 is: 374,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,607.20 : 542,410.80 = 249,632.80 : x
  2. Step 2: Convert to fraction form
    361,607.20/542,410.80 = 249,632.80/x
  3. Step 3: Cross multiply
    361,607.20x = 542,410.80 × 249,632.80
  4. Step 4: Simplify right side
    361,607.20x = 135,403,526,754.24
  5. Step 5: Solve for x
    x = 135,403,526,754.24/361,607.20
  6. Step 6: Final answer
    x = 374,449.20

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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.