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Finding the Fourth Proportional to 101,960.86, 140,707.06 and 56,641.66

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Solution

The fourth proportional to 101,960.86, 140,707.06 and 56,641.66 is: 78,166.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,960.86 : 140,707.06 = 56,641.66 : x
  2. Step 2: Convert to fraction form
    101,960.86/140,707.06 = 56,641.66/x
  3. Step 3: Cross multiply
    101,960.86x = 140,707.06 × 56,641.66
  4. Step 4: Simplify right side
    101,960.86x = 7,969,881,452.12
  5. Step 5: Solve for x
    x = 7,969,881,452.12/101,960.86
  6. Step 6: Final answer
    x = 78,166.09

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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.