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Finding the Fourth Proportional to 107,292.60, 148,055.58 and 61,949.88

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Solution

The fourth proportional to 107,292.60, 148,055.58 and 61,949.88 is: 85,486.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,292.60 : 148,055.58 = 61,949.88 : x
  2. Step 2: Convert to fraction form
    107,292.60/148,055.58 = 61,949.88/x
  3. Step 3: Cross multiply
    107,292.60x = 148,055.58 × 61,949.88
  4. Step 4: Simplify right side
    107,292.60x = 9,172,025,414.33
  5. Step 5: Solve for x
    x = 9,172,025,414.33/107,292.60
  6. Step 6: Final answer
    x = 85,486.10

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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.