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Finding the Fourth Proportional to 124,704.60, 172,049.66 and 70,976.16

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Solution

The fourth proportional to 124,704.60, 172,049.66 and 70,976.16 is: 97,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,704.60 : 172,049.66 = 70,976.16 : x
  2. Step 2: Convert to fraction form
    124,704.60/172,049.66 = 70,976.16/x
  3. Step 3: Cross multiply
    124,704.60x = 172,049.66 × 70,976.16
  4. Step 4: Simplify right side
    124,704.60x = 12,211,424,196.11
  5. Step 5: Solve for x
    x = 12,211,424,196.11/124,704.60
  6. Step 6: Final answer
    x = 97,922.80

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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.