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Finding the Fourth Proportional to 134,506.80, 185,618.52 and 74,074.32

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Solution

The fourth proportional to 134,506.80, 185,618.52 and 74,074.32 is: 102,222.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,506.80 : 185,618.52 = 74,074.32 : x
  2. Step 2: Convert to fraction form
    134,506.80/185,618.52 = 74,074.32/x
  3. Step 3: Cross multiply
    134,506.80x = 185,618.52 × 74,074.32
  4. Step 4: Simplify right side
    134,506.80x = 13,749,565,648.41
  5. Step 5: Solve for x
    x = 13,749,565,648.41/134,506.80
  6. Step 6: Final answer
    x = 102,222.09

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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.