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Finding the Fourth Proportional to 107,287.63, 148,047.15 and 63,672.66

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Solution

The fourth proportional to 107,287.63, 148,047.15 and 63,672.66 is: 87,862.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,287.63 : 148,047.15 = 63,672.66 : x
  2. Step 2: Convert to fraction form
    107,287.63/148,047.15 = 63,672.66/x
  3. Step 3: Cross multiply
    107,287.63x = 148,047.15 × 63,672.66
  4. Step 4: Simplify right side
    107,287.63x = 9,426,555,051.97
  5. Step 5: Solve for x
    x = 9,426,555,051.97/107,287.63
  6. Step 6: Final answer
    x = 87,862.46

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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.