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Finding the Fourth Proportional to 117,718.97, 176,689.43 and 42,911.42

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Solution

The fourth proportional to 117,718.97, 176,689.43 and 42,911.42 is: 64,407.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,718.97 : 176,689.43 = 42,911.42 : x
  2. Step 2: Convert to fraction form
    117,718.97/176,689.43 = 42,911.42/x
  3. Step 3: Cross multiply
    117,718.97x = 176,689.43 × 42,911.42
  4. Step 4: Simplify right side
    117,718.97x = 7,581,994,340.29
  5. Step 5: Solve for x
    x = 7,581,994,340.29/117,718.97
  6. Step 6: Final answer
    x = 64,407.58

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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.