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Finding the Fourth Proportional to 291,625.77, 399,818.88 and 286,311.36

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Solution

The fourth proportional to 291,625.77, 399,818.88 and 286,311.36 is: 392,532.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,625.77 : 399,818.88 = 286,311.36 : x
  2. Step 2: Convert to fraction form
    291,625.77/399,818.88 = 286,311.36/x
  3. Step 3: Cross multiply
    291,625.77x = 399,818.88 × 286,311.36
  4. Step 4: Simplify right side
    291,625.77x = 114,472,687,286.48
  5. Step 5: Solve for x
    x = 114,472,687,286.48/291,625.77
  6. Step 6: Final answer
    x = 392,532.82

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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.