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Finding the Fourth Proportional to 102,611.55, 153,932.72 and 36,039.95

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Solution

The fourth proportional to 102,611.55, 153,932.72 and 36,039.95 is: 54,065.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,611.55 : 153,932.72 = 36,039.95 : x
  2. Step 2: Convert to fraction form
    102,611.55/153,932.72 = 36,039.95/x
  3. Step 3: Cross multiply
    102,611.55x = 153,932.72 × 36,039.95
  4. Step 4: Simplify right side
    102,611.55x = 5,547,726,582.30
  5. Step 5: Solve for x
    x = 5,547,726,582.30/102,611.55
  6. Step 6: Final answer
    x = 54,065.32

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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.