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Finding the Fourth Proportional to 98,242.61, 147,276.36 and 45,623.39

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Solution

The fourth proportional to 98,242.61, 147,276.36 and 45,623.39 is: 68,394.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,242.61 : 147,276.36 = 45,623.39 : x
  2. Step 2: Convert to fraction form
    98,242.61/147,276.36 = 45,623.39/x
  3. Step 3: Cross multiply
    98,242.61x = 147,276.36 × 45,623.39
  4. Step 4: Simplify right side
    98,242.61x = 6,719,246,073.68
  5. Step 5: Solve for x
    x = 6,719,246,073.68/98,242.61
  6. Step 6: Final answer
    x = 68,394.42

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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.