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Finding the Fourth Proportional to 86,860.66, 119,868.16 and 49,134.10

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Solution

The fourth proportional to 86,860.66, 119,868.16 and 49,134.10 is: 67,805.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,860.66 : 119,868.16 = 49,134.10 : x
  2. Step 2: Convert to fraction form
    86,860.66/119,868.16 = 49,134.10/x
  3. Step 3: Cross multiply
    86,860.66x = 119,868.16 × 49,134.10
  4. Step 4: Simplify right side
    86,860.66x = 5,889,613,560.92
  5. Step 5: Solve for x
    x = 5,889,613,560.92/86,860.66
  6. Step 6: Final answer
    x = 67,805.31

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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.