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Finding the Fourth Proportional to 127,183.92, 175,477.80 and 81,888.12

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Solution

The fourth proportional to 127,183.92, 175,477.80 and 81,888.12 is: 112,982.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,183.92 : 175,477.80 = 81,888.12 : x
  2. Step 2: Convert to fraction form
    127,183.92/175,477.80 = 81,888.12/x
  3. Step 3: Cross multiply
    127,183.92x = 175,477.80 × 81,888.12
  4. Step 4: Simplify right side
    127,183.92x = 14,369,547,143.74
  5. Step 5: Solve for x
    x = 14,369,547,143.74/127,183.92
  6. Step 6: Final answer
    x = 112,982.42

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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.