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Finding the Fourth Proportional to 77,950.64, 107,572.92 and 46,118.72

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Solution

The fourth proportional to 77,950.64, 107,572.92 and 46,118.72 is: 63,644.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,950.64 : 107,572.92 = 46,118.72 : x
  2. Step 2: Convert to fraction form
    77,950.64/107,572.92 = 46,118.72/x
  3. Step 3: Cross multiply
    77,950.64x = 107,572.92 × 46,118.72
  4. Step 4: Simplify right side
    77,950.64x = 4,961,125,377.06
  5. Step 5: Solve for x
    x = 4,961,125,377.06/77,950.64
  6. Step 6: Final answer
    x = 63,644.45

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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.