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Finding the Fourth Proportional to 111,565.39, 153,958.66 and 63,166.06

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Solution

The fourth proportional to 111,565.39, 153,958.66 and 63,166.06 is: 87,168.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,565.39 : 153,958.66 = 63,166.06 : x
  2. Step 2: Convert to fraction form
    111,565.39/153,958.66 = 63,166.06/x
  3. Step 3: Cross multiply
    111,565.39x = 153,958.66 × 63,166.06
  4. Step 4: Simplify right side
    111,565.39x = 9,724,961,955.08
  5. Step 5: Solve for x
    x = 9,724,961,955.08/111,565.39
  6. Step 6: Final answer
    x = 87,168.27

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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.