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Finding the Fourth Proportional to 71,251.31, 98,323.21 and 38,985.23

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Solution

The fourth proportional to 71,251.31, 98,323.21 and 38,985.23 is: 53,797.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,251.31 : 98,323.21 = 38,985.23 : x
  2. Step 2: Convert to fraction form
    71,251.31/98,323.21 = 38,985.23/x
  3. Step 3: Cross multiply
    71,251.31x = 98,323.21 × 38,985.23
  4. Step 4: Simplify right side
    71,251.31x = 3,833,152,956.19
  5. Step 5: Solve for x
    x = 3,833,152,956.19/71,251.31
  6. Step 6: Final answer
    x = 53,797.65

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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.