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Finding the Fourth Proportional to 291,593.52, 399,774.69 and 286,279.11

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Solution

The fourth proportional to 291,593.52, 399,774.69 and 286,279.11 is: 392,488.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,593.52 : 399,774.69 = 286,279.11 : x
  2. Step 2: Convert to fraction form
    291,593.52/399,774.69 = 286,279.11/x
  3. Step 3: Cross multiply
    291,593.52x = 399,774.69 × 286,279.11
  4. Step 4: Simplify right side
    291,593.52x = 114,447,142,453.73
  5. Step 5: Solve for x
    x = 114,447,142,453.73/291,593.52
  6. Step 6: Final answer
    x = 392,488.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.