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Finding the Fourth Proportional to 117,029.40, 175,544.10 and 87,653.40

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Solution

The fourth proportional to 117,029.40, 175,544.10 and 87,653.40 is: 131,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,029.40 : 175,544.10 = 87,653.40 : x
  2. Step 2: Convert to fraction form
    117,029.40/175,544.10 = 87,653.40/x
  3. Step 3: Cross multiply
    117,029.40x = 175,544.10 × 87,653.40
  4. Step 4: Simplify right side
    117,029.40x = 15,387,037,214.94
  5. Step 5: Solve for x
    x = 15,387,037,214.94/117,029.40
  6. Step 6: Final answer
    x = 131,480.10

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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.