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Finding the Fourth Proportional to 92,977.65, 139,388.11 and 40,347.50

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Solution

The fourth proportional to 92,977.65, 139,388.11 and 40,347.50 is: 60,487.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,977.65 : 139,388.11 = 40,347.50 : x
  2. Step 2: Convert to fraction form
    92,977.65/139,388.11 = 40,347.50/x
  3. Step 3: Cross multiply
    92,977.65x = 139,388.11 × 40,347.50
  4. Step 4: Simplify right side
    92,977.65x = 5,623,960,970.42
  5. Step 5: Solve for x
    x = 5,623,960,970.42/92,977.65
  6. Step 6: Final answer
    x = 60,487.24

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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.