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Finding the Fourth Proportional to 86,011.88, 128,767.52 and 63,923.18

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Solution

The fourth proportional to 86,011.88, 128,767.52 and 63,923.18 is: 95,698.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,011.88 : 128,767.52 = 63,923.18 : x
  2. Step 2: Convert to fraction form
    86,011.88/128,767.52 = 63,923.18/x
  3. Step 3: Cross multiply
    86,011.88x = 128,767.52 × 63,923.18
  4. Step 4: Simplify right side
    86,011.88x = 8,231,228,875.08
  5. Step 5: Solve for x
    x = 8,231,228,875.08/86,011.88
  6. Step 6: Final answer
    x = 95,698.75

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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.