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Finding the Fourth Proportional to 623,713.60, 936,031.20 and 413,281.60

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Solution

The fourth proportional to 623,713.60, 936,031.20 and 413,281.60 is: 620,227.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,713.60 : 936,031.20 = 413,281.60 : x
  2. Step 2: Convert to fraction form
    623,713.60/936,031.20 = 413,281.60/x
  3. Step 3: Cross multiply
    623,713.60x = 936,031.20 × 413,281.60
  4. Step 4: Simplify right side
    623,713.60x = 386,844,471,985.92
  5. Step 5: Solve for x
    x = 386,844,471,985.92/623,713.60
  6. Step 6: Final answer
    x = 620,227.73

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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.