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Finding the Fourth Proportional to 111,291.53, 153,635.51 and 63,535.66

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Solution

The fourth proportional to 111,291.53, 153,635.51 and 63,535.66 is: 87,709.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,291.53 : 153,635.51 = 63,535.66 : x
  2. Step 2: Convert to fraction form
    111,291.53/153,635.51 = 63,535.66/x
  3. Step 3: Cross multiply
    111,291.53x = 153,635.51 × 63,535.66
  4. Step 4: Simplify right side
    111,291.53x = 9,761,333,302.04
  5. Step 5: Solve for x
    x = 9,761,333,302.04/111,291.53
  6. Step 6: Final answer
    x = 87,709.58

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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.