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Finding the Fourth Proportional to 39,603.71, 59,405.54 and 36,979.31

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Solution

The fourth proportional to 39,603.71, 59,405.54 and 36,979.31 is: 55,468.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,603.71 : 59,405.54 = 36,979.31 : x
  2. Step 2: Convert to fraction form
    39,603.71/59,405.54 = 36,979.31/x
  3. Step 3: Cross multiply
    39,603.71x = 59,405.54 × 36,979.31
  4. Step 4: Simplify right side
    39,603.71x = 2,196,775,397.45
  5. Step 5: Solve for x
    x = 2,196,775,397.45/39,603.71
  6. Step 6: Final answer
    x = 55,468.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.