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Finding the Fourth Proportional to 391,192.40, 586,351.20 and 166,514.60

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Solution

The fourth proportional to 391,192.40, 586,351.20 and 166,514.60 is: 249,585.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,192.40 : 586,351.20 = 166,514.60 : x
  2. Step 2: Convert to fraction form
    391,192.40/586,351.20 = 166,514.60/x
  3. Step 3: Cross multiply
    391,192.40x = 586,351.20 × 166,514.60
  4. Step 4: Simplify right side
    391,192.40x = 97,636,035,527.52
  5. Step 5: Solve for x
    x = 97,636,035,527.52/391,192.40
  6. Step 6: Final answer
    x = 249,585.72

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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.