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Finding the Fourth Proportional to 101,711.36, 140,369.97 and 56,403.55

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Solution

The fourth proportional to 101,711.36, 140,369.97 and 56,403.55 is: 77,841.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,711.36 : 140,369.97 = 56,403.55 : x
  2. Step 2: Convert to fraction form
    101,711.36/140,369.97 = 56,403.55/x
  3. Step 3: Cross multiply
    101,711.36x = 140,369.97 × 56,403.55
  4. Step 4: Simplify right side
    101,711.36x = 7,917,364,621.39
  5. Step 5: Solve for x
    x = 7,917,364,621.39/101,711.36
  6. Step 6: Final answer
    x = 77,841.50

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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.