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Finding the Fourth Proportional to 86,800.72, 119,852.95 and 66,625.65

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Solution

The fourth proportional to 86,800.72, 119,852.95 and 66,625.65 is: 91,995.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,800.72 : 119,852.95 = 66,625.65 : x
  2. Step 2: Convert to fraction form
    86,800.72/119,852.95 = 66,625.65/x
  3. Step 3: Cross multiply
    86,800.72x = 119,852.95 × 66,625.65
  4. Step 4: Simplify right side
    86,800.72x = 7,985,280,698.17
  5. Step 5: Solve for x
    x = 7,985,280,698.17/86,800.72
  6. Step 6: Final answer
    x = 91,995.56

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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.