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Finding the Fourth Proportional to 55,851.28, 77,070.72 and 33,189.28

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Solution

The fourth proportional to 55,851.28, 77,070.72 and 33,189.28 is: 45,798.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,851.28 : 77,070.72 = 33,189.28 : x
  2. Step 2: Convert to fraction form
    55,851.28/77,070.72 = 33,189.28/x
  3. Step 3: Cross multiply
    55,851.28x = 77,070.72 × 33,189.28
  4. Step 4: Simplify right side
    55,851.28x = 2,557,921,705.88
  5. Step 5: Solve for x
    x = 2,557,921,705.88/55,851.28
  6. Step 6: Final answer
    x = 45,798.80

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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.