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Finding the Fourth Proportional to 34,686.18, 47,866.56 and 18,770.28

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Solution

The fourth proportional to 34,686.18, 47,866.56 and 18,770.28 is: 25,902.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,686.18 : 47,866.56 = 18,770.28 : x
  2. Step 2: Convert to fraction form
    34,686.18/47,866.56 = 18,770.28/x
  3. Step 3: Cross multiply
    34,686.18x = 47,866.56 × 18,770.28
  4. Step 4: Simplify right side
    34,686.18x = 898,468,733.84
  5. Step 5: Solve for x
    x = 898,468,733.84/34,686.18
  6. Step 6: Final answer
    x = 25,902.79

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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.