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Finding the Fourth Proportional to 86,482.56, 129,328.56 and 62,869.44

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Solution

The fourth proportional to 86,482.56, 129,328.56 and 62,869.44 is: 94,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,482.56 : 129,328.56 = 62,869.44 : x
  2. Step 2: Convert to fraction form
    86,482.56/129,328.56 = 62,869.44/x
  3. Step 3: Cross multiply
    86,482.56x = 129,328.56 × 62,869.44
  4. Step 4: Simplify right side
    86,482.56x = 8,130,814,143.21
  5. Step 5: Solve for x
    x = 8,130,814,143.21/86,482.56
  6. Step 6: Final answer
    x = 94,016.81

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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.