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Finding the Fourth Proportional to 515,633.24, 711,574.13 and 286,190.62

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Solution

The fourth proportional to 515,633.24, 711,574.13 and 286,190.62 is: 394,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,633.24 : 711,574.13 = 286,190.62 : x
  2. Step 2: Convert to fraction form
    515,633.24/711,574.13 = 286,190.62/x
  3. Step 3: Cross multiply
    515,633.24x = 711,574.13 × 286,190.62
  4. Step 4: Simplify right side
    515,633.24x = 203,645,840,377.20
  5. Step 5: Solve for x
    x = 203,645,840,377.20/515,633.24
  6. Step 6: Final answer
    x = 394,943.20

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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.