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Finding the Fourth Proportional to 391,382.69, 540,098.97 and 230,248.11

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Solution

The fourth proportional to 391,382.69, 540,098.97 and 230,248.11 is: 317,737.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,382.69 : 540,098.97 = 230,248.11 : x
  2. Step 2: Convert to fraction form
    391,382.69/540,098.97 = 230,248.11/x
  3. Step 3: Cross multiply
    391,382.69x = 540,098.97 × 230,248.11
  4. Step 4: Simplify right side
    391,382.69x = 124,356,767,055.45
  5. Step 5: Solve for x
    x = 124,356,767,055.45/391,382.69
  6. Step 6: Final answer
    x = 317,737.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.