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Finding the Fourth Proportional to 64,866.96, 89,517.96 and 36,186.40

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Solution

The fourth proportional to 64,866.96, 89,517.96 and 36,186.40 is: 49,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,866.96 : 89,517.96 = 36,186.40 : x
  2. Step 2: Convert to fraction form
    64,866.96/89,517.96 = 36,186.40/x
  3. Step 3: Cross multiply
    64,866.96x = 89,517.96 × 36,186.40
  4. Step 4: Simplify right side
    64,866.96x = 3,239,332,707.74
  5. Step 5: Solve for x
    x = 3,239,332,707.74/64,866.96
  6. Step 6: Final answer
    x = 49,938.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.