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Finding the Fourth Proportional to 92,699.91, 139,055.40 and 26,145.72

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Solution

The fourth proportional to 92,699.91, 139,055.40 and 26,145.72 is: 39,220.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,699.91 : 139,055.40 = 26,145.72 : x
  2. Step 2: Convert to fraction form
    92,699.91/139,055.40 = 26,145.72/x
  3. Step 3: Cross multiply
    92,699.91x = 139,055.40 × 26,145.72
  4. Step 4: Simplify right side
    92,699.91x = 3,635,703,552.89
  5. Step 5: Solve for x
    x = 3,635,703,552.89/92,699.91
  6. Step 6: Final answer
    x = 39,220.14

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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.