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Finding the Fourth Proportional to 391,556.70, 587,335.05 and 181,604.70

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Solution

The fourth proportional to 391,556.70, 587,335.05 and 181,604.70 is: 272,407.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,556.70 : 587,335.05 = 181,604.70 : x
  2. Step 2: Convert to fraction form
    391,556.70/587,335.05 = 181,604.70/x
  3. Step 3: Cross multiply
    391,556.70x = 587,335.05 × 181,604.70
  4. Step 4: Simplify right side
    391,556.70x = 106,662,805,554.74
  5. Step 5: Solve for x
    x = 106,662,805,554.74/391,556.70
  6. Step 6: Final answer
    x = 272,407.05

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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.