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Finding the Fourth Proportional to 106,884.88, 147,507.99 and 61,561.89

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Solution

The fourth proportional to 106,884.88, 147,507.99 and 61,561.89 is: 84,959.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,884.88 : 147,507.99 = 61,561.89 : x
  2. Step 2: Convert to fraction form
    106,884.88/147,507.99 = 61,561.89/x
  3. Step 3: Cross multiply
    106,884.88x = 147,507.99 × 61,561.89
  4. Step 4: Simplify right side
    106,884.88x = 9,080,869,801.34
  5. Step 5: Solve for x
    x = 9,080,869,801.34/106,884.88
  6. Step 6: Final answer
    x = 84,959.35

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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.