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Finding the Fourth Proportional to 115,387.97, 173,026.57 and 54,547.58

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Solution

The fourth proportional to 115,387.97, 173,026.57 and 54,547.58 is: 81,795.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,387.97 : 173,026.57 = 54,547.58 : x
  2. Step 2: Convert to fraction form
    115,387.97/173,026.57 = 54,547.58/x
  3. Step 3: Cross multiply
    115,387.97x = 173,026.57 × 54,547.58
  4. Step 4: Simplify right side
    115,387.97x = 9,438,180,017.69
  5. Step 5: Solve for x
    x = 9,438,180,017.69/115,387.97
  6. Step 6: Final answer
    x = 81,795.18

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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.