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Finding the Fourth Proportional to 111,603.35, 153,969.20 and 63,194.16

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Solution

The fourth proportional to 111,603.35, 153,969.20 and 63,194.16 is: 87,183.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,603.35 : 153,969.20 = 63,194.16 : x
  2. Step 2: Convert to fraction form
    111,603.35/153,969.20 = 63,194.16/x
  3. Step 3: Cross multiply
    111,603.35x = 153,969.20 × 63,194.16
  4. Step 4: Simplify right side
    111,603.35x = 9,729,953,943.90
  5. Step 5: Solve for x
    x = 9,729,953,943.90/111,603.35
  6. Step 6: Final answer
    x = 87,183.35

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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.