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Finding the Fourth Proportional to 578,165.40, 867,248.10 and 157,440.60

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Solution

The fourth proportional to 578,165.40, 867,248.10 and 157,440.60 is: 236,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,165.40 : 867,248.10 = 157,440.60 : x
  2. Step 2: Convert to fraction form
    578,165.40/867,248.10 = 157,440.60/x
  3. Step 3: Cross multiply
    578,165.40x = 867,248.10 × 157,440.60
  4. Step 4: Simplify right side
    578,165.40x = 136,540,061,212.86
  5. Step 5: Solve for x
    x = 136,540,061,212.86/578,165.40
  6. Step 6: Final answer
    x = 236,160.90

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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.