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Finding the Fourth Proportional to 391,389.89, 586,899.77 and 151,616.10

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Solution

The fourth proportional to 391,389.89, 586,899.77 and 151,616.10 is: 227,352.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,389.89 : 586,899.77 = 151,616.10 : x
  2. Step 2: Convert to fraction form
    391,389.89/586,899.77 = 151,616.10/x
  3. Step 3: Cross multiply
    391,389.89x = 586,899.77 × 151,616.10
  4. Step 4: Simplify right side
    391,389.89x = 88,983,451,283.80
  5. Step 5: Solve for x
    x = 88,983,451,283.80/391,389.89
  6. Step 6: Final answer
    x = 227,352.45

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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.