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Finding the Fourth Proportional to 124,521.69, 171,839.13 and 70,806.71

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Solution

The fourth proportional to 124,521.69, 171,839.13 and 70,806.71 is: 97,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,521.69 : 171,839.13 = 70,806.71 : x
  2. Step 2: Convert to fraction form
    124,521.69/171,839.13 = 70,806.71/x
  3. Step 3: Cross multiply
    124,521.69x = 171,839.13 × 70,806.71
  4. Step 4: Simplify right side
    124,521.69x = 12,167,362,585.37
  5. Step 5: Solve for x
    x = 12,167,362,585.37/124,521.69
  6. Step 6: Final answer
    x = 97,712.80

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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.