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Finding the Fourth Proportional to 101,643.68, 140,282.24 and 59,215.52

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Solution

The fourth proportional to 101,643.68, 140,282.24 and 59,215.52 is: 81,725.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,643.68 : 140,282.24 = 59,215.52 : x
  2. Step 2: Convert to fraction form
    101,643.68/140,282.24 = 59,215.52/x
  3. Step 3: Cross multiply
    101,643.68x = 140,282.24 × 59,215.52
  4. Step 4: Simplify right side
    101,643.68x = 8,306,885,788.36
  5. Step 5: Solve for x
    x = 8,306,885,788.36/101,643.68
  6. Step 6: Final answer
    x = 81,725.55

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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.