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Finding the Fourth Proportional to 99,521.60, 148,931.81 and 62,099.30

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Solution

The fourth proportional to 99,521.60, 148,931.81 and 62,099.30 is: 92,930.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,521.60 : 148,931.81 = 62,099.30 : x
  2. Step 2: Convert to fraction form
    99,521.60/148,931.81 = 62,099.30/x
  3. Step 3: Cross multiply
    99,521.60x = 148,931.81 × 62,099.30
  4. Step 4: Simplify right side
    99,521.60x = 9,248,560,093.58
  5. Step 5: Solve for x
    x = 9,248,560,093.58/99,521.60
  6. Step 6: Final answer
    x = 92,930.18

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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.