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Finding the Fourth Proportional to 447,476.76, 617,545.49 and 256,518.86

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Solution

The fourth proportional to 447,476.76, 617,545.49 and 256,518.86 is: 354,011.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,476.76 : 617,545.49 = 256,518.86 : x
  2. Step 2: Convert to fraction form
    447,476.76/617,545.49 = 256,518.86/x
  3. Step 3: Cross multiply
    447,476.76x = 617,545.49 × 256,518.86
  4. Step 4: Simplify right side
    447,476.76x = 158,412,060,722.62
  5. Step 5: Solve for x
    x = 158,412,060,722.62/447,476.76
  6. Step 6: Final answer
    x = 354,011.82

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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.