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Finding the Fourth Proportional to 86,395.71, 129,406.05 and 41,929.02

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Solution

The fourth proportional to 86,395.71, 129,406.05 and 41,929.02 is: 62,802.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,395.71 : 129,406.05 = 41,929.02 : x
  2. Step 2: Convert to fraction form
    86,395.71/129,406.05 = 41,929.02/x
  3. Step 3: Cross multiply
    86,395.71x = 129,406.05 × 41,929.02
  4. Step 4: Simplify right side
    86,395.71x = 5,425,868,858.57
  5. Step 5: Solve for x
    x = 5,425,868,858.57/86,395.71
  6. Step 6: Final answer
    x = 62,802.53

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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.