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Finding the Fourth Proportional to 625,445.34, 938,168.25 and 152,127.78

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Solution

The fourth proportional to 625,445.34, 938,168.25 and 152,127.78 is: 228,191.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,445.34 : 938,168.25 = 152,127.78 : x
  2. Step 2: Convert to fraction form
    625,445.34/938,168.25 = 152,127.78/x
  3. Step 3: Cross multiply
    625,445.34x = 938,168.25 × 152,127.78
  4. Step 4: Simplify right side
    625,445.34x = 142,721,453,138.99
  5. Step 5: Solve for x
    x = 142,721,453,138.99/625,445.34
  6. Step 6: Final answer
    x = 228,191.73

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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.