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Finding the Fourth Proportional to 178,718.96, 268,084.20 and 85,234.16

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Solution

The fourth proportional to 178,718.96, 268,084.20 and 85,234.16 is: 127,853.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,718.96 : 268,084.20 = 85,234.16 : x
  2. Step 2: Convert to fraction form
    178,718.96/268,084.20 = 85,234.16/x
  3. Step 3: Cross multiply
    178,718.96x = 268,084.20 × 85,234.16
  4. Step 4: Simplify right side
    178,718.96x = 22,849,931,596.27
  5. Step 5: Solve for x
    x = 22,849,931,596.27/178,718.96
  6. Step 6: Final answer
    x = 127,853.99

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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.