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Finding the Fourth Proportional to 243,705.06, 365,586.75 and 85,900.86

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Solution

The fourth proportional to 243,705.06, 365,586.75 and 85,900.86 is: 128,861.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,705.06 : 365,586.75 = 85,900.86 : x
  2. Step 2: Convert to fraction form
    243,705.06/365,586.75 = 85,900.86/x
  3. Step 3: Cross multiply
    243,705.06x = 365,586.75 × 85,900.86
  4. Step 4: Simplify right side
    243,705.06x = 31,404,216,229.61
  5. Step 5: Solve for x
    x = 31,404,216,229.61/243,705.06
  6. Step 6: Final answer
    x = 128,861.57

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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.