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Finding the Fourth Proportional to 89,852.88, 123,994.95 and 49,570.47

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Solution

The fourth proportional to 89,852.88, 123,994.95 and 49,570.47 is: 68,406.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,852.88 : 123,994.95 = 49,570.47 : x
  2. Step 2: Convert to fraction form
    89,852.88/123,994.95 = 49,570.47/x
  3. Step 3: Cross multiply
    89,852.88x = 123,994.95 × 49,570.47
  4. Step 4: Simplify right side
    89,852.88x = 6,146,487,949.13
  5. Step 5: Solve for x
    x = 6,146,487,949.13/89,852.88
  6. Step 6: Final answer
    x = 68,406.13

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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.