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Finding the Fourth Proportional to 117,010.70, 161,442.69 and 74,534.30

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Solution

The fourth proportional to 117,010.70, 161,442.69 and 74,534.30 is: 102,836.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,010.70 : 161,442.69 = 74,534.30 : x
  2. Step 2: Convert to fraction form
    117,010.70/161,442.69 = 74,534.30/x
  3. Step 3: Cross multiply
    117,010.70x = 161,442.69 × 74,534.30
  4. Step 4: Simplify right side
    117,010.70x = 12,033,017,889.27
  5. Step 5: Solve for x
    x = 12,033,017,889.27/117,010.70
  6. Step 6: Final answer
    x = 102,836.90

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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.