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Finding the Fourth Proportional to 677,220.66, 934,659.78 and 419,180.43

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Solution

The fourth proportional to 677,220.66, 934,659.78 and 419,180.43 is: 578,527.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,220.66 : 934,659.78 = 419,180.43 : x
  2. Step 2: Convert to fraction form
    677,220.66/934,659.78 = 419,180.43/x
  3. Step 3: Cross multiply
    677,220.66x = 934,659.78 × 419,180.43
  4. Step 4: Simplify right side
    677,220.66x = 391,791,088,484.11
  5. Step 5: Solve for x
    x = 391,791,088,484.11/677,220.66
  6. Step 6: Final answer
    x = 578,527.96

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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.