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Finding the Fourth Proportional to 419,329.40, 578,595.78 and 247,301.58

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Solution

The fourth proportional to 419,329.40, 578,595.78 and 247,301.58 is: 341,229.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,329.40 : 578,595.78 = 247,301.58 : x
  2. Step 2: Convert to fraction form
    419,329.40/578,595.78 = 247,301.58/x
  3. Step 3: Cross multiply
    419,329.40x = 578,595.78 × 247,301.58
  4. Step 4: Simplify right side
    419,329.40x = 143,087,650,575.33
  5. Step 5: Solve for x
    x = 143,087,650,575.33/419,329.40
  6. Step 6: Final answer
    x = 341,229.71

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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.