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Finding the Fourth Proportional to 92,948.13, 139,421.90 and 26,388.30

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Solution

The fourth proportional to 92,948.13, 139,421.90 and 26,388.30 is: 39,582.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,948.13 : 139,421.90 = 26,388.30 : x
  2. Step 2: Convert to fraction form
    92,948.13/139,421.90 = 26,388.30/x
  3. Step 3: Cross multiply
    92,948.13x = 139,421.90 × 26,388.30
  4. Step 4: Simplify right side
    92,948.13x = 3,679,106,791.83
  5. Step 5: Solve for x
    x = 3,679,106,791.83/92,948.13
  6. Step 6: Final answer
    x = 39,582.36

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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.