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Finding the Fourth Proportional to 431,988.58, 648,272.10 and 179,269.32

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Solution

The fourth proportional to 431,988.58, 648,272.10 and 179,269.32 is: 269,024.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,988.58 : 648,272.10 = 179,269.32 : x
  2. Step 2: Convert to fraction form
    431,988.58/648,272.10 = 179,269.32/x
  3. Step 3: Cross multiply
    431,988.58x = 648,272.10 × 179,269.32
  4. Step 4: Simplify right side
    431,988.58x = 116,215,298,541.97
  5. Step 5: Solve for x
    x = 116,215,298,541.97/431,988.58
  6. Step 6: Final answer
    x = 269,024.01

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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.