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Finding the Fourth Proportional to 561,662.60, 842,493.90 and 162,316.40

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Solution

The fourth proportional to 561,662.60, 842,493.90 and 162,316.40 is: 243,474.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,662.60 : 842,493.90 = 162,316.40 : x
  2. Step 2: Convert to fraction form
    561,662.60/842,493.90 = 162,316.40/x
  3. Step 3: Cross multiply
    561,662.60x = 842,493.90 × 162,316.40
  4. Step 4: Simplify right side
    561,662.60x = 136,750,576,869.96
  5. Step 5: Solve for x
    x = 136,750,576,869.96/561,662.60
  6. Step 6: Final answer
    x = 243,474.60

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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.