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Finding the Fourth Proportional to 112,950.98, 155,873.54 and 61,963.81

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Solution

The fourth proportional to 112,950.98, 155,873.54 and 61,963.81 is: 85,510.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,950.98 : 155,873.54 = 61,963.81 : x
  2. Step 2: Convert to fraction form
    112,950.98/155,873.54 = 61,963.81/x
  3. Step 3: Cross multiply
    112,950.98x = 155,873.54 × 61,963.81
  4. Step 4: Simplify right side
    112,950.98x = 9,658,518,416.59
  5. Step 5: Solve for x
    x = 9,658,518,416.59/112,950.98
  6. Step 6: Final answer
    x = 85,510.71

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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.