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Finding the Fourth Proportional to 74,985.84, 112,515.41 and 32,860.17

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Solution

The fourth proportional to 74,985.84, 112,515.41 and 32,860.17 is: 49,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,985.84 : 112,515.41 = 32,860.17 : x
  2. Step 2: Convert to fraction form
    74,985.84/112,515.41 = 32,860.17/x
  3. Step 3: Cross multiply
    74,985.84x = 112,515.41 × 32,860.17
  4. Step 4: Simplify right side
    74,985.84x = 3,697,275,335.92
  5. Step 5: Solve for x
    x = 3,697,275,335.92/74,985.84
  6. Step 6: Final answer
    x = 49,306.31

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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.