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Finding the Fourth Proportional to 90,242.73, 124,530.93 and 49,953.65

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Solution

The fourth proportional to 90,242.73, 124,530.93 and 49,953.65 is: 68,933.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,242.73 : 124,530.93 = 49,953.65 : x
  2. Step 2: Convert to fraction form
    90,242.73/124,530.93 = 49,953.65/x
  3. Step 3: Cross multiply
    90,242.73x = 124,530.93 × 49,953.65
  4. Step 4: Simplify right side
    90,242.73x = 6,220,773,868.74
  5. Step 5: Solve for x
    x = 6,220,773,868.74/90,242.73
  6. Step 6: Final answer
    x = 68,933.80

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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.