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Finding the Fourth Proportional to 54,675.12, 74,959.53 and 53,678.64

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Solution

The fourth proportional to 54,675.12, 74,959.53 and 53,678.64 is: 73,593.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,675.12 : 74,959.53 = 53,678.64 : x
  2. Step 2: Convert to fraction form
    54,675.12/74,959.53 = 53,678.64/x
  3. Step 3: Cross multiply
    54,675.12x = 74,959.53 × 53,678.64
  4. Step 4: Simplify right side
    54,675.12x = 4,023,725,625.44
  5. Step 5: Solve for x
    x = 4,023,725,625.44/54,675.12
  6. Step 6: Final answer
    x = 73,593.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.