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Finding the Fourth Proportional to 29,615.68, 40,869.71 and 17,678.76

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Solution

The fourth proportional to 29,615.68, 40,869.71 and 17,678.76 is: 24,396.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,615.68 : 40,869.71 = 17,678.76 : x
  2. Step 2: Convert to fraction form
    29,615.68/40,869.71 = 17,678.76/x
  3. Step 3: Cross multiply
    29,615.68x = 40,869.71 × 17,678.76
  4. Step 4: Simplify right side
    29,615.68x = 722,525,718.44
  5. Step 5: Solve for x
    x = 722,525,718.44/29,615.68
  6. Step 6: Final answer
    x = 24,396.73

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1.5x scale

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.