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Finding the Fourth Proportional to 55,864.74, 77,109.69 and 33,219.68

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Solution

The fourth proportional to 55,864.74, 77,109.69 and 33,219.68 is: 45,852.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,864.74 : 77,109.69 = 33,219.68 : x
  2. Step 2: Convert to fraction form
    55,864.74/77,109.69 = 33,219.68/x
  3. Step 3: Cross multiply
    55,864.74x = 77,109.69 × 33,219.68
  4. Step 4: Simplify right side
    55,864.74x = 2,561,558,903.15
  5. Step 5: Solve for x
    x = 2,561,558,903.15/55,864.74
  6. Step 6: Final answer
    x = 45,852.88

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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.