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Finding the Fourth Proportional to 106,615.68, 147,128.65 and 58,867.98

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Solution

The fourth proportional to 106,615.68, 147,128.65 and 58,867.98 is: 81,237.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,615.68 : 147,128.65 = 58,867.98 : x
  2. Step 2: Convert to fraction form
    106,615.68/147,128.65 = 58,867.98/x
  3. Step 3: Cross multiply
    106,615.68x = 147,128.65 × 58,867.98
  4. Step 4: Simplify right side
    106,615.68x = 8,661,166,425.63
  5. Step 5: Solve for x
    x = 8,661,166,425.63/106,615.68
  6. Step 6: Final answer
    x = 81,237.27

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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.