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Finding the Fourth Proportional to 31,210.80, 43,073.76 and 17,065.76

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Solution

The fourth proportional to 31,210.80, 43,073.76 and 17,065.76 is: 23,552.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,210.80 : 43,073.76 = 17,065.76 : x
  2. Step 2: Convert to fraction form
    31,210.80/43,073.76 = 17,065.76/x
  3. Step 3: Cross multiply
    31,210.80x = 43,073.76 × 17,065.76
  4. Step 4: Simplify right side
    31,210.80x = 735,086,450.46
  5. Step 5: Solve for x
    x = 735,086,450.46/31,210.80
  6. Step 6: Final answer
    x = 23,552.31

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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.