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Finding the Fourth Proportional to 160,931.60, 241,512.60 and 90,736.40

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Solution

The fourth proportional to 160,931.60, 241,512.60 and 90,736.40 is: 136,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,931.60 : 241,512.60 = 90,736.40 : x
  2. Step 2: Convert to fraction form
    160,931.60/241,512.60 = 90,736.40/x
  3. Step 3: Cross multiply
    160,931.60x = 241,512.60 × 90,736.40
  4. Step 4: Simplify right side
    160,931.60x = 21,913,983,878.64
  5. Step 5: Solve for x
    x = 21,913,983,878.64/160,931.60
  6. Step 6: Final answer
    x = 136,169.55

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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.