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Finding the Fourth Proportional to 109,776.78, 151,491.60 and 59,475.78

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Solution

The fourth proportional to 109,776.78, 151,491.60 and 59,475.78 is: 82,076.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,776.78 : 151,491.60 = 59,475.78 : x
  2. Step 2: Convert to fraction form
    109,776.78/151,491.60 = 59,475.78/x
  3. Step 3: Cross multiply
    109,776.78x = 151,491.60 × 59,475.78
  4. Step 4: Simplify right side
    109,776.78x = 9,010,081,073.45
  5. Step 5: Solve for x
    x = 9,010,081,073.45/109,776.78
  6. Step 6: Final answer
    x = 82,076.38

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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.