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Finding the Fourth Proportional to 625,303.36, 862,867.52 and 353,394.56

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Solution

The fourth proportional to 625,303.36, 862,867.52 and 353,394.56 is: 487,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,303.36 : 862,867.52 = 353,394.56 : x
  2. Step 2: Convert to fraction form
    625,303.36/862,867.52 = 353,394.56/x
  3. Step 3: Cross multiply
    625,303.36x = 862,867.52 × 353,394.56
  4. Step 4: Simplify right side
    625,303.36x = 304,932,687,568.69
  5. Step 5: Solve for x
    x = 304,932,687,568.69/625,303.36
  6. Step 6: Final answer
    x = 487,655.60

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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.