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Finding the Fourth Proportional to 107,212.88, 147,932.44 and 64,773.76

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Solution

The fourth proportional to 107,212.88, 147,932.44 and 64,773.76 is: 89,374.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,212.88 : 147,932.44 = 64,773.76 : x
  2. Step 2: Convert to fraction form
    107,212.88/147,932.44 = 64,773.76/x
  3. Step 3: Cross multiply
    107,212.88x = 147,932.44 × 64,773.76
  4. Step 4: Simplify right side
    107,212.88x = 9,582,140,364.77
  5. Step 5: Solve for x
    x = 9,582,140,364.77/107,212.88
  6. Step 6: Final answer
    x = 89,374.90

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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.