Home / 76,278.92-105,227.51-66,193.20

Finding the Fourth Proportional to 76,278.92, 105,227.51 and 66,193.20

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Solution

The fourth proportional to 76,278.92, 105,227.51 and 66,193.20 is: 91,314.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,278.92 : 105,227.51 = 66,193.20 : x
  2. Step 2: Convert to fraction form
    76,278.92/105,227.51 = 66,193.20/x
  3. Step 3: Cross multiply
    76,278.92x = 105,227.51 × 66,193.20
  4. Step 4: Simplify right side
    76,278.92x = 6,965,345,283.97
  5. Step 5: Solve for x
    x = 6,965,345,283.97/76,278.92
  6. Step 6: Final answer
    x = 91,314.16

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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.