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Finding the Fourth Proportional to 106,603.44, 147,165.30 and 83,592.69

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Solution

The fourth proportional to 106,603.44, 147,165.30 and 83,592.69 is: 115,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,603.44 : 147,165.30 = 83,592.69 : x
  2. Step 2: Convert to fraction form
    106,603.44/147,165.30 = 83,592.69/x
  3. Step 3: Cross multiply
    106,603.44x = 147,165.30 × 83,592.69
  4. Step 4: Simplify right side
    106,603.44x = 12,301,943,301.66
  5. Step 5: Solve for x
    x = 12,301,943,301.66/106,603.44
  6. Step 6: Final answer
    x = 115,399.12

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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.