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Finding the Fourth Proportional to 106,915.88, 147,559.50 and 61,585.08

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Solution

The fourth proportional to 106,915.88, 147,559.50 and 61,585.08 is: 84,996.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,915.88 : 147,559.50 = 61,585.08 : x
  2. Step 2: Convert to fraction form
    106,915.88/147,559.50 = 61,585.08/x
  3. Step 3: Cross multiply
    106,915.88x = 147,559.50 × 61,585.08
  4. Step 4: Simplify right side
    106,915.88x = 9,087,463,612.26
  5. Step 5: Solve for x
    x = 9,087,463,612.26/106,915.88
  6. Step 6: Final answer
    x = 84,996.39

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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.