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Finding the Fourth Proportional to 81,569.65, 122,348.52 and 22,400.23

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Solution

The fourth proportional to 81,569.65, 122,348.52 and 22,400.23 is: 33,598.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,569.65 : 122,348.52 = 22,400.23 : x
  2. Step 2: Convert to fraction form
    81,569.65/122,348.52 = 22,400.23/x
  3. Step 3: Cross multiply
    81,569.65x = 122,348.52 × 22,400.23
  4. Step 4: Simplify right side
    81,569.65x = 2,740,634,988.16
  5. Step 5: Solve for x
    x = 2,740,634,988.16/81,569.65
  6. Step 6: Final answer
    x = 33,598.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.