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Finding the Fourth Proportional to 98,923.20, 148,384.80 and 43,627.20

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Solution

The fourth proportional to 98,923.20, 148,384.80 and 43,627.20 is: 65,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,923.20 : 148,384.80 = 43,627.20 : x
  2. Step 2: Convert to fraction form
    98,923.20/148,384.80 = 43,627.20/x
  3. Step 3: Cross multiply
    98,923.20x = 148,384.80 × 43,627.20
  4. Step 4: Simplify right side
    98,923.20x = 6,473,613,346.56
  5. Step 5: Solve for x
    x = 6,473,613,346.56/98,923.20
  6. Step 6: Final answer
    x = 65,440.80

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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.