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Finding the Fourth Proportional to 57,761.76, 86,642.64 and 37,116.48

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Solution

The fourth proportional to 57,761.76, 86,642.64 and 37,116.48 is: 55,674.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,761.76 : 86,642.64 = 37,116.48 : x
  2. Step 2: Convert to fraction form
    57,761.76/86,642.64 = 37,116.48/x
  3. Step 3: Cross multiply
    57,761.76x = 86,642.64 × 37,116.48
  4. Step 4: Simplify right side
    57,761.76x = 3,215,869,814.71
  5. Step 5: Solve for x
    x = 3,215,869,814.71/57,761.76
  6. Step 6: Final answer
    x = 55,674.72

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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.