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Finding the Fourth Proportional to 393,118.05, 542,332.14 and 249,801.20

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Solution

The fourth proportional to 393,118.05, 542,332.14 and 249,801.20 is: 344,617.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,118.05 : 542,332.14 = 249,801.20 : x
  2. Step 2: Convert to fraction form
    393,118.05/542,332.14 = 249,801.20/x
  3. Step 3: Cross multiply
    393,118.05x = 542,332.14 × 249,801.20
  4. Step 4: Simplify right side
    393,118.05x = 135,475,216,658.91
  5. Step 5: Solve for x
    x = 135,475,216,658.91/393,118.05
  6. Step 6: Final answer
    x = 344,617.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.