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Finding the Fourth Proportional to 61,219.30, 91,848.80 and 30,032.68

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Solution

The fourth proportional to 61,219.30, 91,848.80 and 30,032.68 is: 45,058.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,219.30 : 91,848.80 = 30,032.68 : x
  2. Step 2: Convert to fraction form
    61,219.30/91,848.80 = 30,032.68/x
  3. Step 3: Cross multiply
    61,219.30x = 91,848.80 × 30,032.68
  4. Step 4: Simplify right side
    61,219.30x = 2,758,465,618.78
  5. Step 5: Solve for x
    x = 2,758,465,618.78/61,219.30
  6. Step 6: Final answer
    x = 45,058.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.