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Finding the Fourth Proportional to 101,603.76, 140,243.76 and 65,796.36

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Solution

The fourth proportional to 101,603.76, 140,243.76 and 65,796.36 is: 90,818.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,603.76 : 140,243.76 = 65,796.36 : x
  2. Step 2: Convert to fraction form
    101,603.76/140,243.76 = 65,796.36/x
  3. Step 3: Cross multiply
    101,603.76x = 140,243.76 × 65,796.36
  4. Step 4: Simplify right side
    101,603.76x = 9,227,528,920.71
  5. Step 5: Solve for x
    x = 9,227,528,920.71/101,603.76
  6. Step 6: Final answer
    x = 90,818.77

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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.