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Finding the Fourth Proportional to 709,866.72, 979,500.51 and 419,437.83

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Solution

The fourth proportional to 709,866.72, 979,500.51 and 419,437.83 is: 578,755.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,866.72 : 979,500.51 = 419,437.83 : x
  2. Step 2: Convert to fraction form
    709,866.72/979,500.51 = 419,437.83/x
  3. Step 3: Cross multiply
    709,866.72x = 979,500.51 × 419,437.83
  4. Step 4: Simplify right side
    709,866.72x = 410,839,568,398.29
  5. Step 5: Solve for x
    x = 410,839,568,398.29/709,866.72
  6. Step 6: Final answer
    x = 578,755.92

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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.