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Finding the Fourth Proportional to 101,603.40, 140,198.81 and 56,270.19

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Solution

The fourth proportional to 101,603.40, 140,198.81 and 56,270.19 is: 77,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,603.40 : 140,198.81 = 56,270.19 : x
  2. Step 2: Convert to fraction form
    101,603.40/140,198.81 = 56,270.19/x
  3. Step 3: Cross multiply
    101,603.40x = 140,198.81 × 56,270.19
  4. Step 4: Simplify right side
    101,603.40x = 7,889,013,395.12
  5. Step 5: Solve for x
    x = 7,889,013,395.12/101,603.40
  6. Step 6: Final answer
    x = 77,645.17

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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.