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Finding the Fourth Proportional to 55,978.75, 77,253.17 and 33,009.49

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Solution

The fourth proportional to 55,978.75, 77,253.17 and 33,009.49 is: 45,554.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,978.75 : 77,253.17 = 33,009.49 : x
  2. Step 2: Convert to fraction form
    55,978.75/77,253.17 = 33,009.49/x
  3. Step 3: Cross multiply
    55,978.75x = 77,253.17 × 33,009.49
  4. Step 4: Simplify right side
    55,978.75x = 2,550,087,742.58
  5. Step 5: Solve for x
    x = 2,550,087,742.58/55,978.75
  6. Step 6: Final answer
    x = 45,554.57

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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.