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Finding the Fourth Proportional to 99,274.60, 148,911.90 and 59,811.40

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Solution

The fourth proportional to 99,274.60, 148,911.90 and 59,811.40 is: 89,717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,274.60 : 148,911.90 = 59,811.40 : x
  2. Step 2: Convert to fraction form
    99,274.60/148,911.90 = 59,811.40/x
  3. Step 3: Cross multiply
    99,274.60x = 148,911.90 × 59,811.40
  4. Step 4: Simplify right side
    99,274.60x = 8,906,629,215.66
  5. Step 5: Solve for x
    x = 8,906,629,215.66/99,274.60
  6. Step 6: Final answer
    x = 89,717.10

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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.