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Finding the Fourth Proportional to 92,792.44, 139,074.64 and 42,803.20

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Solution

The fourth proportional to 92,792.44, 139,074.64 and 42,803.20 is: 64,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,792.44 : 139,074.64 = 42,803.20 : x
  2. Step 2: Convert to fraction form
    92,792.44/139,074.64 = 42,803.20/x
  3. Step 3: Cross multiply
    92,792.44x = 139,074.64 × 42,803.20
  4. Step 4: Simplify right side
    92,792.44x = 5,952,839,630.85
  5. Step 5: Solve for x
    x = 5,952,839,630.85/92,792.44
  6. Step 6: Final answer
    x = 64,152.20

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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.