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Finding the Fourth Proportional to 423,778.59, 584,570.12 and 253,914.30

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Solution

The fourth proportional to 423,778.59, 584,570.12 and 253,914.30 is: 350,255.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,778.59 : 584,570.12 = 253,914.30 : x
  2. Step 2: Convert to fraction form
    423,778.59/584,570.12 = 253,914.30/x
  3. Step 3: Cross multiply
    423,778.59x = 584,570.12 × 253,914.30
  4. Step 4: Simplify right side
    423,778.59x = 148,430,711,551.15
  5. Step 5: Solve for x
    x = 148,430,711,551.15/423,778.59
  6. Step 6: Final answer
    x = 350,255.33

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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.