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Finding the Fourth Proportional to 72,590.23, 109,311.71 and 63,340.59

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Solution

The fourth proportional to 72,590.23, 109,311.71 and 63,340.59 is: 95,382.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,590.23 : 109,311.71 = 63,340.59 : x
  2. Step 2: Convert to fraction form
    72,590.23/109,311.71 = 63,340.59/x
  3. Step 3: Cross multiply
    72,590.23x = 109,311.71 × 63,340.59
  4. Step 4: Simplify right side
    72,590.23x = 6,923,867,888.61
  5. Step 5: Solve for x
    x = 6,923,867,888.61/72,590.23
  6. Step 6: Final answer
    x = 95,382.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.