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Finding the Fourth Proportional to 163,031.17, 224,985.31 and 98,491.43

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Solution

The fourth proportional to 163,031.17, 224,985.31 and 98,491.43 is: 135,919.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,031.17 : 224,985.31 = 98,491.43 : x
  2. Step 2: Convert to fraction form
    163,031.17/224,985.31 = 98,491.43/x
  3. Step 3: Cross multiply
    163,031.17x = 224,985.31 × 98,491.43
  4. Step 4: Simplify right side
    163,031.17x = 22,159,124,260.32
  5. Step 5: Solve for x
    x = 22,159,124,260.32/163,031.17
  6. Step 6: Final answer
    x = 135,919.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.