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Finding the Fourth Proportional to 106,554.59, 147,041.12 and 61,239.95

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Solution

The fourth proportional to 106,554.59, 147,041.12 and 61,239.95 is: 84,508.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,554.59 : 147,041.12 = 61,239.95 : x
  2. Step 2: Convert to fraction form
    106,554.59/147,041.12 = 61,239.95/x
  3. Step 3: Cross multiply
    106,554.59x = 147,041.12 × 61,239.95
  4. Step 4: Simplify right side
    106,554.59x = 9,004,790,806.04
  5. Step 5: Solve for x
    x = 9,004,790,806.04/106,554.59
  6. Step 6: Final answer
    x = 84,508.71

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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.