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Finding the Fourth Proportional to 276,684.60, 415,026.90 and 156,618.30

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Solution

The fourth proportional to 276,684.60, 415,026.90 and 156,618.30 is: 234,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,684.60 : 415,026.90 = 156,618.30 : x
  2. Step 2: Convert to fraction form
    276,684.60/415,026.90 = 156,618.30/x
  3. Step 3: Cross multiply
    276,684.60x = 415,026.90 × 156,618.30
  4. Step 4: Simplify right side
    276,684.60x = 65,000,807,532.27
  5. Step 5: Solve for x
    x = 65,000,807,532.27/276,684.60
  6. Step 6: Final answer
    x = 234,927.45

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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.