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Finding the Fourth Proportional to 99,187.57, 136,810.92 and 63,361.68

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Solution

The fourth proportional to 99,187.57, 136,810.92 and 63,361.68 is: 87,395.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,187.57 : 136,810.92 = 63,361.68 : x
  2. Step 2: Convert to fraction form
    99,187.57/136,810.92 = 63,361.68/x
  3. Step 3: Cross multiply
    99,187.57x = 136,810.92 × 63,361.68
  4. Step 4: Simplify right side
    99,187.57x = 8,668,569,733.55
  5. Step 5: Solve for x
    x = 8,668,569,733.55/99,187.57
  6. Step 6: Final answer
    x = 87,395.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.