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Finding the Fourth Proportional to 86,797.18, 130,194.82 and 65,865.77

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Solution

The fourth proportional to 86,797.18, 130,194.82 and 65,865.77 is: 98,797.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,797.18 : 130,194.82 = 65,865.77 : x
  2. Step 2: Convert to fraction form
    86,797.18/130,194.82 = 65,865.77/x
  3. Step 3: Cross multiply
    86,797.18x = 130,194.82 × 65,865.77
  4. Step 4: Simplify right side
    86,797.18x = 8,575,382,069.31
  5. Step 5: Solve for x
    x = 8,575,382,069.31/86,797.18
  6. Step 6: Final answer
    x = 98,797.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.