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Finding the Fourth Proportional to 29,071.13, 40,111.88 and 17,130.11

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Solution

The fourth proportional to 29,071.13, 40,111.88 and 17,130.11 is: 23,635.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,071.13 : 40,111.88 = 17,130.11 : x
  2. Step 2: Convert to fraction form
    29,071.13/40,111.88 = 17,130.11/x
  3. Step 3: Cross multiply
    29,071.13x = 40,111.88 × 17,130.11
  4. Step 4: Simplify right side
    29,071.13x = 687,120,630.50
  5. Step 5: Solve for x
    x = 687,120,630.50/29,071.13
  6. Step 6: Final answer
    x = 23,635.85

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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.