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Finding the Fourth Proportional to 107,686.40, 161,551.20 and 32,811.20

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Solution

The fourth proportional to 107,686.40, 161,551.20 and 32,811.20 is: 49,223.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,686.40 : 161,551.20 = 32,811.20 : x
  2. Step 2: Convert to fraction form
    107,686.40/161,551.20 = 32,811.20/x
  3. Step 3: Cross multiply
    107,686.40x = 161,551.20 × 32,811.20
  4. Step 4: Simplify right side
    107,686.40x = 5,300,688,733.44
  5. Step 5: Solve for x
    x = 5,300,688,733.44/107,686.40
  6. Step 6: Final answer
    x = 49,223.38

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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.