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Finding the Fourth Proportional to 561,906.20, 842,859.30 and 556,657.40

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Solution

The fourth proportional to 561,906.20, 842,859.30 and 556,657.40 is: 834,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,906.20 : 842,859.30 = 556,657.40 : x
  2. Step 2: Convert to fraction form
    561,906.20/842,859.30 = 556,657.40/x
  3. Step 3: Cross multiply
    561,906.20x = 842,859.30 × 556,657.40
  4. Step 4: Simplify right side
    561,906.20x = 469,183,866,503.82
  5. Step 5: Solve for x
    x = 469,183,866,503.82/561,906.20
  6. Step 6: Final answer
    x = 834,986.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.