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Finding the Fourth Proportional to 186,687.60, 280,031.40 and 115,666.80

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Solution

The fourth proportional to 186,687.60, 280,031.40 and 115,666.80 is: 173,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,687.60 : 280,031.40 = 115,666.80 : x
  2. Step 2: Convert to fraction form
    186,687.60/280,031.40 = 115,666.80/x
  3. Step 3: Cross multiply
    186,687.60x = 280,031.40 × 115,666.80
  4. Step 4: Simplify right side
    186,687.60x = 32,390,335,937.52
  5. Step 5: Solve for x
    x = 32,390,335,937.52/186,687.60
  6. Step 6: Final answer
    x = 173,500.20

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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.