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Finding the Fourth Proportional to 85,696.42, 128,543.25 and 23,366.92

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Solution

The fourth proportional to 85,696.42, 128,543.25 and 23,366.92 is: 35,050.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,696.42 : 128,543.25 = 23,366.92 : x
  2. Step 2: Convert to fraction form
    85,696.42/128,543.25 = 23,366.92/x
  3. Step 3: Cross multiply
    85,696.42x = 128,543.25 × 23,366.92
  4. Step 4: Simplify right side
    85,696.42x = 3,003,659,839.29
  5. Step 5: Solve for x
    x = 3,003,659,839.29/85,696.42
  6. Step 6: Final answer
    x = 35,050.00

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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.