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Finding the Fourth Proportional to 45,956.88, 68,920.74 and 17,875.08

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Solution

The fourth proportional to 45,956.88, 68,920.74 and 17,875.08 is: 26,806.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,956.88 : 68,920.74 = 17,875.08 : x
  2. Step 2: Convert to fraction form
    45,956.88/68,920.74 = 17,875.08/x
  3. Step 3: Cross multiply
    45,956.88x = 68,920.74 × 17,875.08
  4. Step 4: Simplify right side
    45,956.88x = 1,231,963,741.16
  5. Step 5: Solve for x
    x = 1,231,963,741.16/45,956.88
  6. Step 6: Final answer
    x = 26,806.95

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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.