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Finding the Fourth Proportional to 52,889.12, 72,986.62 and 29,016.80

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Solution

The fourth proportional to 52,889.12, 72,986.62 and 29,016.80 is: 40,042.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,889.12 : 72,986.62 = 29,016.80 : x
  2. Step 2: Convert to fraction form
    52,889.12/72,986.62 = 29,016.80/x
  3. Step 3: Cross multiply
    52,889.12x = 72,986.62 × 29,016.80
  4. Step 4: Simplify right side
    52,889.12x = 2,117,838,155.22
  5. Step 5: Solve for x
    x = 2,117,838,155.22/52,889.12
  6. Step 6: Final answer
    x = 40,042.98

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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.