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Finding the Fourth Proportional to 101,600.75, 140,207.56 and 56,278.59

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Solution

The fourth proportional to 101,600.75, 140,207.56 and 56,278.59 is: 77,663.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,600.75 : 140,207.56 = 56,278.59 : x
  2. Step 2: Convert to fraction form
    101,600.75/140,207.56 = 56,278.59/x
  3. Step 3: Cross multiply
    101,600.75x = 140,207.56 × 56,278.59
  4. Step 4: Simplify right side
    101,600.75x = 7,890,683,784.14
  5. Step 5: Solve for x
    x = 7,890,683,784.14/101,600.75
  6. Step 6: Final answer
    x = 77,663.64

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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.