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Finding the Fourth Proportional to 393,443.58, 542,952.17 and 223,677.71

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Solution

The fourth proportional to 393,443.58, 542,952.17 and 223,677.71 is: 308,675.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,443.58 : 542,952.17 = 223,677.71 : x
  2. Step 2: Convert to fraction form
    393,443.58/542,952.17 = 223,677.71/x
  3. Step 3: Cross multiply
    393,443.58x = 542,952.17 × 223,677.71
  4. Step 4: Simplify right side
    393,443.58x = 121,446,298,025.13
  5. Step 5: Solve for x
    x = 121,446,298,025.13/393,443.58
  6. Step 6: Final answer
    x = 308,675.26

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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.