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Finding the Fourth Proportional to 111,293.65, 153,638.43 and 63,537.77

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Solution

The fourth proportional to 111,293.65, 153,638.43 and 63,537.77 is: 87,712.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,293.65 : 153,638.43 = 63,537.77 : x
  2. Step 2: Convert to fraction form
    111,293.65/153,638.43 = 63,537.77/x
  3. Step 3: Cross multiply
    111,293.65x = 153,638.43 × 63,537.77
  4. Step 4: Simplify right side
    111,293.65x = 9,761,843,228.50
  5. Step 5: Solve for x
    x = 9,761,843,228.50/111,293.65
  6. Step 6: Final answer
    x = 87,712.49

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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.