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Finding the Fourth Proportional to 545,909.20, 818,863.80 and 356,952.40

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Solution

The fourth proportional to 545,909.20, 818,863.80 and 356,952.40 is: 535,428.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,909.20 : 818,863.80 = 356,952.40 : x
  2. Step 2: Convert to fraction form
    545,909.20/818,863.80 = 356,952.40/x
  3. Step 3: Cross multiply
    545,909.20x = 818,863.80 × 356,952.40
  4. Step 4: Simplify right side
    545,909.20x = 292,295,398,683.12
  5. Step 5: Solve for x
    x = 292,295,398,683.12/545,909.20
  6. Step 6: Final answer
    x = 535,428.60

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Similar ratio
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1.5x scale

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.