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Finding the Fourth Proportional to 106,646.55, 147,169.41 and 58,898.87

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Solution

The fourth proportional to 106,646.55, 147,169.41 and 58,898.87 is: 81,278.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,646.55 : 147,169.41 = 58,898.87 : x
  2. Step 2: Convert to fraction form
    106,646.55/147,169.41 = 58,898.87/x
  3. Step 3: Cross multiply
    106,646.55x = 147,169.41 × 58,898.87
  4. Step 4: Simplify right side
    106,646.55x = 8,668,111,947.57
  5. Step 5: Solve for x
    x = 8,668,111,947.57/106,646.55
  6. Step 6: Final answer
    x = 81,278.88

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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.