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Finding the Fourth Proportional to 561,938.80, 842,908.20 and 162,592.60

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Solution

The fourth proportional to 561,938.80, 842,908.20 and 162,592.60 is: 243,888.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,938.80 : 842,908.20 = 162,592.60 : x
  2. Step 2: Convert to fraction form
    561,938.80/842,908.20 = 162,592.60/x
  3. Step 3: Cross multiply
    561,938.80x = 842,908.20 × 162,592.60
  4. Step 4: Simplify right side
    561,938.80x = 137,050,635,799.32
  5. Step 5: Solve for x
    x = 137,050,635,799.32/561,938.80
  6. Step 6: Final answer
    x = 243,888.90

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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.