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Finding the Fourth Proportional to 391,521.04, 587,203.80 and 191,755.60

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Solution

The fourth proportional to 391,521.04, 587,203.80 and 191,755.60 is: 287,595.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,521.04 : 587,203.80 = 191,755.60 : x
  2. Step 2: Convert to fraction form
    391,521.04/587,203.80 = 191,755.60/x
  3. Step 3: Cross multiply
    391,521.04x = 587,203.80 × 191,755.60
  4. Step 4: Simplify right side
    391,521.04x = 112,599,616,991.28
  5. Step 5: Solve for x
    x = 112,599,616,991.28/391,521.04
  6. Step 6: Final answer
    x = 287,595.32

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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.