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Finding the Fourth Proportional to 632,081.28, 872,857.44 and 406,123.68

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Solution

The fourth proportional to 632,081.28, 872,857.44 and 406,123.68 is: 560,826.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,081.28 : 872,857.44 = 406,123.68 : x
  2. Step 2: Convert to fraction form
    632,081.28/872,857.44 = 406,123.68/x
  3. Step 3: Cross multiply
    632,081.28x = 872,857.44 × 406,123.68
  4. Step 4: Simplify right side
    632,081.28x = 354,488,075,648.18
  5. Step 5: Solve for x
    x = 354,488,075,648.18/632,081.28
  6. Step 6: Final answer
    x = 560,826.73

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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.