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Finding the Fourth Proportional to 117,952.60, 176,928.90 and 71,181.40

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Solution

The fourth proportional to 117,952.60, 176,928.90 and 71,181.40 is: 106,772.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,952.60 : 176,928.90 = 71,181.40 : x
  2. Step 2: Convert to fraction form
    117,952.60/176,928.90 = 71,181.40/x
  3. Step 3: Cross multiply
    117,952.60x = 176,928.90 × 71,181.40
  4. Step 4: Simplify right side
    117,952.60x = 12,594,046,802.46
  5. Step 5: Solve for x
    x = 12,594,046,802.46/117,952.60
  6. Step 6: Final answer
    x = 106,772.10

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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.