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Finding the Fourth Proportional to 109,954.40, 164,931.60 and 54,658.40

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Solution

The fourth proportional to 109,954.40, 164,931.60 and 54,658.40 is: 81,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,954.40 : 164,931.60 = 54,658.40 : x
  2. Step 2: Convert to fraction form
    109,954.40/164,931.60 = 54,658.40/x
  3. Step 3: Cross multiply
    109,954.40x = 164,931.60 × 54,658.40
  4. Step 4: Simplify right side
    109,954.40x = 9,014,897,365.44
  5. Step 5: Solve for x
    x = 9,014,897,365.44/109,954.40
  6. Step 6: Final answer
    x = 81,987.60

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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.