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Finding the Fourth Proportional to 672,868.80, 928,560.48 and 371,060.16

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Solution

The fourth proportional to 672,868.80, 928,560.48 and 371,060.16 is: 512,063.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,868.80 : 928,560.48 = 371,060.16 : x
  2. Step 2: Convert to fraction form
    672,868.80/928,560.48 = 371,060.16/x
  3. Step 3: Cross multiply
    672,868.80x = 928,560.48 × 371,060.16
  4. Step 4: Simplify right side
    672,868.80x = 344,551,800,278.48
  5. Step 5: Solve for x
    x = 344,551,800,278.48/672,868.80
  6. Step 6: Final answer
    x = 512,063.87

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Double scale
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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.