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Finding the Fourth Proportional to 99,171.44, 136,913.82 and 75,256.28

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Solution

The fourth proportional to 99,171.44, 136,913.82 and 75,256.28 is: 103,897.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,171.44 : 136,913.82 = 75,256.28 : x
  2. Step 2: Convert to fraction form
    99,171.44/136,913.82 = 75,256.28/x
  3. Step 3: Cross multiply
    99,171.44x = 136,913.82 × 75,256.28
  4. Step 4: Simplify right side
    99,171.44x = 10,303,624,773.79
  5. Step 5: Solve for x
    x = 10,303,624,773.79/99,171.44
  6. Step 6: Final answer
    x = 103,897.10

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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.