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Finding the Fourth Proportional to 67,991.76, 93,833.40 and 37,780.08

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Solution

The fourth proportional to 67,991.76, 93,833.40 and 37,780.08 is: 52,139.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,991.76 : 93,833.40 = 37,780.08 : x
  2. Step 2: Convert to fraction form
    67,991.76/93,833.40 = 37,780.08/x
  3. Step 3: Cross multiply
    67,991.76x = 93,833.40 × 37,780.08
  4. Step 4: Simplify right side
    67,991.76x = 3,545,033,358.67
  5. Step 5: Solve for x
    x = 3,545,033,358.67/67,991.76
  6. Step 6: Final answer
    x = 52,139.16

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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.