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Finding the Fourth Proportional to 101,233.35, 139,703.07 and 55,912.47

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Solution

The fourth proportional to 101,233.35, 139,703.07 and 55,912.47 is: 77,159.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,233.35 : 139,703.07 = 55,912.47 : x
  2. Step 2: Convert to fraction form
    101,233.35/139,703.07 = 55,912.47/x
  3. Step 3: Cross multiply
    101,233.35x = 139,703.07 × 55,912.47
  4. Step 4: Simplify right side
    101,233.35x = 7,811,143,710.28
  5. Step 5: Solve for x
    x = 7,811,143,710.28/101,233.35
  6. Step 6: Final answer
    x = 77,159.79

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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.