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Finding the Fourth Proportional to 285,253.59, 393,649.97 and 156,200.19

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Solution

The fourth proportional to 285,253.59, 393,649.97 and 156,200.19 is: 215,556.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,253.59 : 393,649.97 = 156,200.19 : x
  2. Step 2: Convert to fraction form
    285,253.59/393,649.97 = 156,200.19/x
  3. Step 3: Cross multiply
    285,253.59x = 393,649.97 × 156,200.19
  4. Step 4: Simplify right side
    285,253.59x = 61,488,201,974.18
  5. Step 5: Solve for x
    x = 61,488,201,974.18/285,253.59
  6. Step 6: Final answer
    x = 215,556.28

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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.