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Finding the Fourth Proportional to 99,562.88, 148,993.32 and 62,140.48

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Solution

The fourth proportional to 99,562.88, 148,993.32 and 62,140.48 is: 92,991.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,562.88 : 148,993.32 = 62,140.48 : x
  2. Step 2: Convert to fraction form
    99,562.88/148,993.32 = 62,140.48/x
  3. Step 3: Cross multiply
    99,562.88x = 148,993.32 × 62,140.48
  4. Step 4: Simplify right side
    99,562.88x = 9,258,516,421.59
  5. Step 5: Solve for x
    x = 9,258,516,421.59/99,562.88
  6. Step 6: Final answer
    x = 92,991.65

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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.