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Finding the Fourth Proportional to 515,373.59, 711,249.19 and 297,591.45

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Solution

The fourth proportional to 515,373.59, 711,249.19 and 297,591.45 is: 410,695.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,373.59 : 711,249.19 = 297,591.45 : x
  2. Step 2: Convert to fraction form
    515,373.59/711,249.19 = 297,591.45/x
  3. Step 3: Cross multiply
    515,373.59x = 711,249.19 × 297,591.45
  4. Step 4: Simplify right side
    515,373.59x = 211,661,678,353.04
  5. Step 5: Solve for x
    x = 211,661,678,353.04/515,373.59
  6. Step 6: Final answer
    x = 410,695.63

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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.