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Finding the Fourth Proportional to 801,689.84, 1,105,800.32 and 515,571.92

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Solution

The fourth proportional to 801,689.84, 1,105,800.32 and 515,571.92 is: 711,147.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,689.84 : 1,105,800.32 = 515,571.92 : x
  2. Step 2: Convert to fraction form
    801,689.84/1,105,800.32 = 515,571.92/x
  3. Step 3: Cross multiply
    801,689.84x = 1,105,800.32 × 515,571.92
  4. Step 4: Simplify right side
    801,689.84x = 570,119,594,119.01
  5. Step 5: Solve for x
    x = 570,119,594,119.01/801,689.84
  6. Step 6: Final answer
    x = 711,147.34

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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.