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Finding the Fourth Proportional to 353,681.78, 530,505.39 and 132,048.50

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Solution

The fourth proportional to 353,681.78, 530,505.39 and 132,048.50 is: 198,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,681.78 : 530,505.39 = 132,048.50 : x
  2. Step 2: Convert to fraction form
    353,681.78/530,505.39 = 132,048.50/x
  3. Step 3: Cross multiply
    353,681.78x = 530,505.39 × 132,048.50
  4. Step 4: Simplify right side
    353,681.78x = 70,052,440,991.42
  5. Step 5: Solve for x
    x = 70,052,440,991.42/353,681.78
  6. Step 6: Final answer
    x = 198,066.30

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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.