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Finding the Fourth Proportional to 249,643.20, 374,464.80 and 124,939.20

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Solution

The fourth proportional to 249,643.20, 374,464.80 and 124,939.20 is: 187,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,643.20 : 374,464.80 = 124,939.20 : x
  2. Step 2: Convert to fraction form
    249,643.20/374,464.80 = 124,939.20/x
  3. Step 3: Cross multiply
    249,643.20x = 374,464.80 × 124,939.20
  4. Step 4: Simplify right side
    249,643.20x = 46,785,332,540.16
  5. Step 5: Solve for x
    x = 46,785,332,540.16/249,643.20
  6. Step 6: Final answer
    x = 187,408.80

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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.