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Finding the Fourth Proportional to 103,216.68, 142,444.08 and 60,788.88

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Solution

The fourth proportional to 103,216.68, 142,444.08 and 60,788.88 is: 83,891.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,216.68 : 142,444.08 = 60,788.88 : x
  2. Step 2: Convert to fraction form
    103,216.68/142,444.08 = 60,788.88/x
  3. Step 3: Cross multiply
    103,216.68x = 142,444.08 × 60,788.88
  4. Step 4: Simplify right side
    103,216.68x = 8,659,016,085.83
  5. Step 5: Solve for x
    x = 8,659,016,085.83/103,216.68
  6. Step 6: Final answer
    x = 83,891.64

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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.