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Finding the Fourth Proportional to 75,393.95, 103,955.76 and 56,240.48

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Solution

The fourth proportional to 75,393.95, 103,955.76 and 56,240.48 is: 77,546.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,393.95 : 103,955.76 = 56,240.48 : x
  2. Step 2: Convert to fraction form
    75,393.95/103,955.76 = 56,240.48/x
  3. Step 3: Cross multiply
    75,393.95x = 103,955.76 × 56,240.48
  4. Step 4: Simplify right side
    75,393.95x = 5,846,521,605.77
  5. Step 5: Solve for x
    x = 5,846,521,605.77/75,393.95
  6. Step 6: Final answer
    x = 77,546.29

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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.