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Finding the Fourth Proportional to 98,573.80, 147,863.58 and 38,599.78

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Solution

The fourth proportional to 98,573.80, 147,863.58 and 38,599.78 is: 57,900.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,573.80 : 147,863.58 = 38,599.78 : x
  2. Step 2: Convert to fraction form
    98,573.80/147,863.58 = 38,599.78/x
  3. Step 3: Cross multiply
    98,573.80x = 147,863.58 × 38,599.78
  4. Step 4: Simplify right side
    98,573.80x = 5,707,501,658.01
  5. Step 5: Solve for x
    x = 5,707,501,658.01/98,573.80
  6. Step 6: Final answer
    x = 57,900.80

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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.