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Finding the Fourth Proportional to 77,612.58, 107,186.69 and 53,476.31

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Solution

The fourth proportional to 77,612.58, 107,186.69 and 53,476.31 is: 73,853.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,612.58 : 107,186.69 = 53,476.31 : x
  2. Step 2: Convert to fraction form
    77,612.58/107,186.69 = 53,476.31/x
  3. Step 3: Cross multiply
    77,612.58x = 107,186.69 × 53,476.31
  4. Step 4: Simplify right side
    77,612.58x = 5,731,947,859.00
  5. Step 5: Solve for x
    x = 5,731,947,859.00/77,612.58
  6. Step 6: Final answer
    x = 73,853.33

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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.