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Finding the Fourth Proportional to 98,586.16, 147,934.60 and 39,426.44

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Solution

The fourth proportional to 98,586.16, 147,934.60 and 39,426.44 is: 59,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,586.16 : 147,934.60 = 39,426.44 : x
  2. Step 2: Convert to fraction form
    98,586.16/147,934.60 = 39,426.44/x
  3. Step 3: Cross multiply
    98,586.16x = 147,934.60 × 39,426.44
  4. Step 4: Simplify right side
    98,586.16x = 5,832,534,433.69
  5. Step 5: Solve for x
    x = 5,832,534,433.69/98,586.16
  6. Step 6: Final answer
    x = 59,161.80

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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.