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Finding the Fourth Proportional to 111,118.59, 153,346.28 and 63,370.91

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Solution

The fourth proportional to 111,118.59, 153,346.28 and 63,370.91 is: 87,453.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,118.59 : 153,346.28 = 63,370.91 : x
  2. Step 2: Convert to fraction form
    111,118.59/153,346.28 = 63,370.91/x
  3. Step 3: Cross multiply
    111,118.59x = 153,346.28 × 63,370.91
  4. Step 4: Simplify right side
    111,118.59x = 9,717,692,991.86
  5. Step 5: Solve for x
    x = 9,717,692,991.86/111,118.59
  6. Step 6: Final answer
    x = 87,453.35

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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.