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Finding the Fourth Proportional to 147,112.40, 220,668.60 and 109,787.60

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Solution

The fourth proportional to 147,112.40, 220,668.60 and 109,787.60 is: 164,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,112.40 : 220,668.60 = 109,787.60 : x
  2. Step 2: Convert to fraction form
    147,112.40/220,668.60 = 109,787.60/x
  3. Step 3: Cross multiply
    147,112.40x = 220,668.60 × 109,787.60
  4. Step 4: Simplify right side
    147,112.40x = 24,226,675,989.36
  5. Step 5: Solve for x
    x = 24,226,675,989.36/147,112.40
  6. Step 6: Final answer
    x = 164,681.40

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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.