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Finding the Fourth Proportional to 717,833.30, 990,654.17 and 395,543.34

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Solution

The fourth proportional to 717,833.30, 990,654.17 and 395,543.34 is: 545,874.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,833.30 : 990,654.17 = 395,543.34 : x
  2. Step 2: Convert to fraction form
    717,833.30/990,654.17 = 395,543.34/x
  3. Step 3: Cross multiply
    717,833.30x = 990,654.17 × 395,543.34
  4. Step 4: Simplify right side
    717,833.30x = 391,846,659,186.73
  5. Step 5: Solve for x
    x = 391,846,659,186.73/717,833.30
  6. Step 6: Final answer
    x = 545,874.17

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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.