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Finding the Fourth Proportional to 109,360.88, 150,983.62 and 71,700.74

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Solution

The fourth proportional to 109,360.88, 150,983.62 and 71,700.74 is: 98,990.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,360.88 : 150,983.62 = 71,700.74 : x
  2. Step 2: Convert to fraction form
    109,360.88/150,983.62 = 71,700.74/x
  3. Step 3: Cross multiply
    109,360.88x = 150,983.62 × 71,700.74
  4. Step 4: Simplify right side
    109,360.88x = 10,825,636,347.71
  5. Step 5: Solve for x
    x = 10,825,636,347.71/109,360.88
  6. Step 6: Final answer
    x = 98,990.03

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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.