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Finding the Fourth Proportional to 625,304.36, 862,868.90 and 353,395.56

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Solution

The fourth proportional to 625,304.36, 862,868.90 and 353,395.56 is: 487,656.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,304.36 : 862,868.90 = 353,395.56 : x
  2. Step 2: Convert to fraction form
    625,304.36/862,868.90 = 353,395.56/x
  3. Step 3: Cross multiply
    625,304.36x = 862,868.90 × 353,395.56
  4. Step 4: Simplify right side
    625,304.36x = 304,934,038,122.08
  5. Step 5: Solve for x
    x = 304,934,038,122.08/625,304.36
  6. Step 6: Final answer
    x = 487,656.98

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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.