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Finding the Fourth Proportional to 109,372.60, 164,058.90 and 91,876.60

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Solution

The fourth proportional to 109,372.60, 164,058.90 and 91,876.60 is: 137,814.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,372.60 : 164,058.90 = 91,876.60 : x
  2. Step 2: Convert to fraction form
    109,372.60/164,058.90 = 91,876.60/x
  3. Step 3: Cross multiply
    109,372.60x = 164,058.90 × 91,876.60
  4. Step 4: Simplify right side
    109,372.60x = 15,073,173,931.74
  5. Step 5: Solve for x
    x = 15,073,173,931.74/109,372.60
  6. Step 6: Final answer
    x = 137,814.90

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1.5x scale

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.