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Finding the Fourth Proportional to 106,572.47, 147,080.80 and 91,514.98

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Solution

The fourth proportional to 106,572.47, 147,080.80 and 91,514.98 is: 126,299.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,572.47 : 147,080.80 = 91,514.98 : x
  2. Step 2: Convert to fraction form
    106,572.47/147,080.80 = 91,514.98/x
  3. Step 3: Cross multiply
    106,572.47x = 147,080.80 × 91,514.98
  4. Step 4: Simplify right side
    106,572.47x = 13,460,096,217.08
  5. Step 5: Solve for x
    x = 13,460,096,217.08/106,572.47
  6. Step 6: Final answer
    x = 126,299.93

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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.