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Finding the Fourth Proportional to 74,950.59, 112,392.94 and 39,881.91

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Solution

The fourth proportional to 74,950.59, 112,392.94 and 39,881.91 is: 59,805.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,950.59 : 112,392.94 = 39,881.91 : x
  2. Step 2: Convert to fraction form
    74,950.59/112,392.94 = 39,881.91/x
  3. Step 3: Cross multiply
    74,950.59x = 112,392.94 × 39,881.91
  4. Step 4: Simplify right side
    74,950.59x = 4,482,445,117.72
  5. Step 5: Solve for x
    x = 4,482,445,117.72/74,950.59
  6. Step 6: Final answer
    x = 59,805.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.