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Finding the Fourth Proportional to 147,788.80, 221,683.20 and 108,422.80

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Solution

The fourth proportional to 147,788.80, 221,683.20 and 108,422.80 is: 162,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,788.80 : 221,683.20 = 108,422.80 : x
  2. Step 2: Convert to fraction form
    147,788.80/221,683.20 = 108,422.80/x
  3. Step 3: Cross multiply
    147,788.80x = 221,683.20 × 108,422.80
  4. Step 4: Simplify right side
    147,788.80x = 24,035,513,256.96
  5. Step 5: Solve for x
    x = 24,035,513,256.96/147,788.80
  6. Step 6: Final answer
    x = 162,634.20

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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.