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Finding the Fourth Proportional to 78,552.18, 117,810.52 and 22,391.08

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Solution

The fourth proportional to 78,552.18, 117,810.52 and 22,391.08 is: 33,581.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,552.18 : 117,810.52 = 22,391.08 : x
  2. Step 2: Convert to fraction form
    78,552.18/117,810.52 = 22,391.08/x
  3. Step 3: Cross multiply
    78,552.18x = 117,810.52 × 22,391.08
  4. Step 4: Simplify right side
    78,552.18x = 2,637,904,427.66
  5. Step 5: Solve for x
    x = 2,637,904,427.66/78,552.18
  6. Step 6: Final answer
    x = 33,581.56

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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.