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Finding the Fourth Proportional to 391,301.40, 586,952.10 and 191,652.60

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Solution

The fourth proportional to 391,301.40, 586,952.10 and 191,652.60 is: 287,478.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,301.40 : 586,952.10 = 191,652.60 : x
  2. Step 2: Convert to fraction form
    391,301.40/586,952.10 = 191,652.60/x
  3. Step 3: Cross multiply
    391,301.40x = 586,952.10 × 191,652.60
  4. Step 4: Simplify right side
    391,301.40x = 112,490,896,040.46
  5. Step 5: Solve for x
    x = 112,490,896,040.46/391,301.40
  6. Step 6: Final answer
    x = 287,478.90

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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.