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Finding the Fourth Proportional to 124,169.84, 171,555.12 and 86,611.76

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Solution

The fourth proportional to 124,169.84, 171,555.12 and 86,611.76 is: 119,664.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,169.84 : 171,555.12 = 86,611.76 : x
  2. Step 2: Convert to fraction form
    124,169.84/171,555.12 = 86,611.76/x
  3. Step 3: Cross multiply
    124,169.84x = 171,555.12 × 86,611.76
  4. Step 4: Simplify right side
    124,169.84x = 14,858,690,880.21
  5. Step 5: Solve for x
    x = 14,858,690,880.21/124,169.84
  6. Step 6: Final answer
    x = 119,664.25

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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.