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Finding the Fourth Proportional to 124,151.29, 171,316.92 and 69,690.98

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Solution

The fourth proportional to 124,151.29, 171,316.92 and 69,690.98 is: 96,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,151.29 : 171,316.92 = 69,690.98 : x
  2. Step 2: Convert to fraction form
    124,151.29/171,316.92 = 69,690.98/x
  3. Step 3: Cross multiply
    124,151.29x = 171,316.92 × 69,690.98
  4. Step 4: Simplify right side
    124,151.29x = 11,939,244,045.38
  5. Step 5: Solve for x
    x = 11,939,244,045.38/124,151.29
  6. Step 6: Final answer
    x = 96,166.89

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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.