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Finding the Fourth Proportional to 74,792.71, 103,252.02 and 57,758.72

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Solution

The fourth proportional to 74,792.71, 103,252.02 and 57,758.72 is: 79,736.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,792.71 : 103,252.02 = 57,758.72 : x
  2. Step 2: Convert to fraction form
    74,792.71/103,252.02 = 57,758.72/x
  3. Step 3: Cross multiply
    74,792.71x = 103,252.02 × 57,758.72
  4. Step 4: Simplify right side
    74,792.71x = 5,963,703,779.76
  5. Step 5: Solve for x
    x = 5,963,703,779.76/74,792.71
  6. Step 6: Final answer
    x = 79,736.43

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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.