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Finding the Fourth Proportional to 368,769.80, 553,330.20 and 132,136.40

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Solution

The fourth proportional to 368,769.80, 553,330.20 and 132,136.40 is: 198,267.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,769.80 : 553,330.20 = 132,136.40 : x
  2. Step 2: Convert to fraction form
    368,769.80/553,330.20 = 132,136.40/x
  3. Step 3: Cross multiply
    368,769.80x = 553,330.20 × 132,136.40
  4. Step 4: Simplify right side
    368,769.80x = 73,115,060,639.28
  5. Step 5: Solve for x
    x = 73,115,060,639.28/368,769.80
  6. Step 6: Final answer
    x = 198,267.48

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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.