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Finding the Fourth Proportional to 101,603, 140,217.12 and 61,316.06

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Solution

The fourth proportional to 101,603, 140,217.12 and 61,316.06 is: 84,619.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,603 : 140,217.12 = 61,316.06 : x
  2. Step 2: Convert to fraction form
    101,603/140,217.12 = 61,316.06/x
  3. Step 3: Cross multiply
    101,603x = 140,217.12 × 61,316.06
  4. Step 4: Simplify right side
    101,603x = 8,597,561,342.95
  5. Step 5: Solve for x
    x = 8,597,561,342.95/101,603
  6. Step 6: Final answer
    x = 84,619.17

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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.