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Finding the Fourth Proportional to 54,578.88, 75,291.28 and 31,903.05

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Solution

The fourth proportional to 54,578.88, 75,291.28 and 31,903.05 is: 44,010.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,578.88 : 75,291.28 = 31,903.05 : x
  2. Step 2: Convert to fraction form
    54,578.88/75,291.28 = 31,903.05/x
  3. Step 3: Cross multiply
    54,578.88x = 75,291.28 × 31,903.05
  4. Step 4: Simplify right side
    54,578.88x = 2,402,021,470.40
  5. Step 5: Solve for x
    x = 2,402,021,470.40/54,578.88
  6. Step 6: Final answer
    x = 44,010.09

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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.