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Finding the Fourth Proportional to 54,603.71, 75,355.54 and 30,731.93

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Solution

The fourth proportional to 54,603.71, 75,355.54 and 30,731.93 is: 42,411.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,603.71 : 75,355.54 = 30,731.93 : x
  2. Step 2: Convert to fraction form
    54,603.71/75,355.54 = 30,731.93/x
  3. Step 3: Cross multiply
    54,603.71x = 75,355.54 × 30,731.93
  4. Step 4: Simplify right side
    54,603.71x = 2,315,820,726.78
  5. Step 5: Solve for x
    x = 2,315,820,726.78/54,603.71
  6. Step 6: Final answer
    x = 42,411.42

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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.