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Finding the Fourth Proportional to 561,244.14, 774,517.61 and 319,526.71

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Solution

The fourth proportional to 561,244.14, 774,517.61 and 319,526.71 is: 440,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,244.14 : 774,517.61 = 319,526.71 : x
  2. Step 2: Convert to fraction form
    561,244.14/774,517.61 = 319,526.71/x
  3. Step 3: Cross multiply
    561,244.14x = 774,517.61 × 319,526.71
  4. Step 4: Simplify right side
    561,244.14x = 247,479,059,887.78
  5. Step 5: Solve for x
    x = 247,479,059,887.78/561,244.14
  6. Step 6: Final answer
    x = 440,947.25

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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.