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Finding the Fourth Proportional to 391,521.60, 587,282.40 and 233,668.80

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Solution

The fourth proportional to 391,521.60, 587,282.40 and 233,668.80 is: 350,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,521.60 : 587,282.40 = 233,668.80 : x
  2. Step 2: Convert to fraction form
    391,521.60/587,282.40 = 233,668.80/x
  3. Step 3: Cross multiply
    391,521.60x = 587,282.40 × 233,668.80
  4. Step 4: Simplify right side
    391,521.60x = 137,229,573,669.12
  5. Step 5: Solve for x
    x = 137,229,573,669.12/391,521.60
  6. Step 6: Final answer
    x = 350,503.20

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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.