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Finding the Fourth Proportional to 103,689.51, 155,534.13 and 32,618.43

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Solution

The fourth proportional to 103,689.51, 155,534.13 and 32,618.43 is: 48,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.51 : 155,534.13 = 32,618.43 : x
  2. Step 2: Convert to fraction form
    103,689.51/155,534.13 = 32,618.43/x
  3. Step 3: Cross multiply
    103,689.51x = 155,534.13 × 32,618.43
  4. Step 4: Simplify right side
    103,689.51x = 5,073,279,132.02
  5. Step 5: Solve for x
    x = 5,073,279,132.02/103,689.51
  6. Step 6: Final answer
    x = 48,927.60

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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.