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Finding the Fourth Proportional to 61,980.85, 92,984.33 and 32,390.74

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Solution

The fourth proportional to 61,980.85, 92,984.33 and 32,390.74 is: 48,592.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,980.85 : 92,984.33 = 32,390.74 : x
  2. Step 2: Convert to fraction form
    61,980.85/92,984.33 = 32,390.74/x
  3. Step 3: Cross multiply
    61,980.85x = 92,984.33 × 32,390.74
  4. Step 4: Simplify right side
    61,980.85x = 3,011,831,257.10
  5. Step 5: Solve for x
    x = 3,011,831,257.10/61,980.85
  6. Step 6: Final answer
    x = 48,592.93

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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.