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Finding the Fourth Proportional to 709,212.80, 979,357.56 and 527,858.48

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Solution

The fourth proportional to 709,212.80, 979,357.56 and 527,858.48 is: 728,923.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,212.80 : 979,357.56 = 527,858.48 : x
  2. Step 2: Convert to fraction form
    709,212.80/979,357.56 = 527,858.48/x
  3. Step 3: Cross multiply
    709,212.80x = 979,357.56 × 527,858.48
  4. Step 4: Simplify right side
    709,212.80x = 516,962,192,998.11
  5. Step 5: Solve for x
    x = 516,962,192,998.11/709,212.80
  6. Step 6: Final answer
    x = 728,923.95

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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.