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Finding the Fourth Proportional to 381,801.30, 572,529.15 and 171,330.90

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Solution

The fourth proportional to 381,801.30, 572,529.15 and 171,330.90 is: 256,918.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,801.30 : 572,529.15 = 171,330.90 : x
  2. Step 2: Convert to fraction form
    381,801.30/572,529.15 = 171,330.90/x
  3. Step 3: Cross multiply
    381,801.30x = 572,529.15 × 171,330.90
  4. Step 4: Simplify right side
    381,801.30x = 98,091,934,545.74
  5. Step 5: Solve for x
    x = 98,091,934,545.74/381,801.30
  6. Step 6: Final answer
    x = 256,918.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.