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Finding the Fourth Proportional to 74,718.60, 112,077.90 and 27,965.40

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Solution

The fourth proportional to 74,718.60, 112,077.90 and 27,965.40 is: 41,948.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,718.60 : 112,077.90 = 27,965.40 : x
  2. Step 2: Convert to fraction form
    74,718.60/112,077.90 = 27,965.40/x
  3. Step 3: Cross multiply
    74,718.60x = 112,077.90 × 27,965.40
  4. Step 4: Simplify right side
    74,718.60x = 3,134,303,304.66
  5. Step 5: Solve for x
    x = 3,134,303,304.66/74,718.60
  6. Step 6: Final answer
    x = 41,948.10

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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.