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Finding the Fourth Proportional to 677,713.15, 935,240.34 and 371,781.69

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Solution

The fourth proportional to 677,713.15, 935,240.34 and 371,781.69 is: 513,056.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,713.15 : 935,240.34 = 371,781.69 : x
  2. Step 2: Convert to fraction form
    677,713.15/935,240.34 = 371,781.69/x
  3. Step 3: Cross multiply
    677,713.15x = 935,240.34 × 371,781.69
  4. Step 4: Simplify right side
    677,713.15x = 347,705,234,161.38
  5. Step 5: Solve for x
    x = 347,705,234,161.38/677,713.15
  6. Step 6: Final answer
    x = 513,056.64

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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.