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Finding the Fourth Proportional to 85,925.57, 128,800.40 and 36,034.56

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Solution

The fourth proportional to 85,925.57, 128,800.40 and 36,034.56 is: 54,014.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,925.57 : 128,800.40 = 36,034.56 : x
  2. Step 2: Convert to fraction form
    85,925.57/128,800.40 = 36,034.56/x
  3. Step 3: Cross multiply
    85,925.57x = 128,800.40 × 36,034.56
  4. Step 4: Simplify right side
    85,925.57x = 4,641,265,561.65
  5. Step 5: Solve for x
    x = 4,641,265,561.65/85,925.57
  6. Step 6: Final answer
    x = 54,014.96

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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.