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Finding the Fourth Proportional to 111,407.97, 153,751.47 and 63,663.33

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Solution

The fourth proportional to 111,407.97, 153,751.47 and 63,663.33 is: 87,860.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,407.97 : 153,751.47 = 63,663.33 : x
  2. Step 2: Convert to fraction form
    111,407.97/153,751.47 = 63,663.33/x
  3. Step 3: Cross multiply
    111,407.97x = 153,751.47 × 63,663.33
  4. Step 4: Simplify right side
    111,407.97x = 9,788,330,572.60
  5. Step 5: Solve for x
    x = 9,788,330,572.60/111,407.97
  6. Step 6: Final answer
    x = 87,860.24

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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.