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Finding the Fourth Proportional to 66,523.68, 99,787.14 and 19,776.96

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Solution

The fourth proportional to 66,523.68, 99,787.14 and 19,776.96 is: 29,665.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,523.68 : 99,787.14 = 19,776.96 : x
  2. Step 2: Convert to fraction form
    66,523.68/99,787.14 = 19,776.96/x
  3. Step 3: Cross multiply
    66,523.68x = 99,787.14 × 19,776.96
  4. Step 4: Simplify right side
    66,523.68x = 1,973,486,276.29
  5. Step 5: Solve for x
    x = 1,973,486,276.29/66,523.68
  6. Step 6: Final answer
    x = 29,665.92

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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.