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Finding the Fourth Proportional to 29,557.61, 40,789.61 and 16,129.16

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Solution

The fourth proportional to 29,557.61, 40,789.61 and 16,129.16 is: 22,258.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,557.61 : 40,789.61 = 16,129.16 : x
  2. Step 2: Convert to fraction form
    29,557.61/40,789.61 = 16,129.16/x
  3. Step 3: Cross multiply
    29,557.61x = 40,789.61 × 16,129.16
  4. Step 4: Simplify right side
    29,557.61x = 657,902,014.39
  5. Step 5: Solve for x
    x = 657,902,014.39/29,557.61
  6. Step 6: Final answer
    x = 22,258.30

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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.