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Finding the Fourth Proportional to 107,297.60, 148,036.36 and 61,969.56

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Solution

The fourth proportional to 107,297.60, 148,036.36 and 61,969.56 is: 85,498.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,297.60 : 148,036.36 = 61,969.56 : x
  2. Step 2: Convert to fraction form
    107,297.60/148,036.36 = 61,969.56/x
  3. Step 3: Cross multiply
    107,297.60x = 148,036.36 × 61,969.56
  4. Step 4: Simplify right side
    107,297.60x = 9,173,748,093.20
  5. Step 5: Solve for x
    x = 9,173,748,093.20/107,297.60
  6. Step 6: Final answer
    x = 85,498.17

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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.