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Finding the Fourth Proportional to 111,436.70, 153,745.25 and 63,656.22

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Solution

The fourth proportional to 111,436.70, 153,745.25 and 63,656.22 is: 87,824.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,436.70 : 153,745.25 = 63,656.22 : x
  2. Step 2: Convert to fraction form
    111,436.70/153,745.25 = 63,656.22/x
  3. Step 3: Cross multiply
    111,436.70x = 153,745.25 × 63,656.22
  4. Step 4: Simplify right side
    111,436.70x = 9,786,841,139.67
  5. Step 5: Solve for x
    x = 9,786,841,139.67/111,436.70
  6. Step 6: Final answer
    x = 87,824.22

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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.