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Finding the Fourth Proportional to 78,349.95, 117,480.80 and 25,029.41

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Solution

The fourth proportional to 78,349.95, 117,480.80 and 25,029.41 is: 37,530.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,349.95 : 117,480.80 = 25,029.41 : x
  2. Step 2: Convert to fraction form
    78,349.95/117,480.80 = 25,029.41/x
  3. Step 3: Cross multiply
    78,349.95x = 117,480.80 × 25,029.41
  4. Step 4: Simplify right side
    78,349.95x = 2,940,474,444.71
  5. Step 5: Solve for x
    x = 2,940,474,444.71/78,349.95
  6. Step 6: Final answer
    x = 37,530.01

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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.