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Finding the Fourth Proportional to 86,705.68, 130,067.18 and 23,526.80

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Solution

The fourth proportional to 86,705.68, 130,067.18 and 23,526.80 is: 35,292.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,705.68 : 130,067.18 = 23,526.80 : x
  2. Step 2: Convert to fraction form
    86,705.68/130,067.18 = 23,526.80/x
  3. Step 3: Cross multiply
    86,705.68x = 130,067.18 × 23,526.80
  4. Step 4: Simplify right side
    86,705.68x = 3,060,064,412.79
  5. Step 5: Solve for x
    x = 3,060,064,412.79/86,705.68
  6. Step 6: Final answer
    x = 35,292.55

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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.