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Finding the Fourth Proportional to 101,186.51, 139,639.43 and 55,864.31

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Solution

The fourth proportional to 101,186.51, 139,639.43 and 55,864.31 is: 77,093.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,186.51 : 139,639.43 = 55,864.31 : x
  2. Step 2: Convert to fraction form
    101,186.51/139,639.43 = 55,864.31/x
  3. Step 3: Cross multiply
    101,186.51x = 139,639.43 × 55,864.31
  4. Step 4: Simplify right side
    101,186.51x = 7,800,860,405.74
  5. Step 5: Solve for x
    x = 7,800,860,405.74/101,186.51
  6. Step 6: Final answer
    x = 77,093.88

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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.