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Finding the Fourth Proportional to 92,970.44, 128,151.98 and 85,247.60

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Solution

The fourth proportional to 92,970.44, 128,151.98 and 85,247.60 is: 117,506.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,970.44 : 128,151.98 = 85,247.60 : x
  2. Step 2: Convert to fraction form
    92,970.44/128,151.98 = 85,247.60/x
  3. Step 3: Cross multiply
    92,970.44x = 128,151.98 × 85,247.60
  4. Step 4: Simplify right side
    92,970.44x = 10,924,647,663.25
  5. Step 5: Solve for x
    x = 10,924,647,663.25/92,970.44
  6. Step 6: Final answer
    x = 117,506.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.