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Finding the Fourth Proportional to 73,214.97, 109,780.84 and 28,817.65

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Solution

The fourth proportional to 73,214.97, 109,780.84 and 28,817.65 is: 43,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,214.97 : 109,780.84 = 28,817.65 : x
  2. Step 2: Convert to fraction form
    73,214.97/109,780.84 = 28,817.65/x
  3. Step 3: Cross multiply
    73,214.97x = 109,780.84 × 28,817.65
  4. Step 4: Simplify right side
    73,214.97x = 3,163,625,823.83
  5. Step 5: Solve for x
    x = 3,163,625,823.83/73,214.97
  6. Step 6: Final answer
    x = 43,210.10

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1.5x scale

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.