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Finding the Fourth Proportional to 134,792.30, 186,012.86 and 74,366.71

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Solution

The fourth proportional to 134,792.30, 186,012.86 and 74,366.71 is: 102,625.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,792.30 : 186,012.86 = 74,366.71 : x
  2. Step 2: Convert to fraction form
    134,792.30/186,012.86 = 74,366.71/x
  3. Step 3: Cross multiply
    134,792.30x = 186,012.86 × 74,366.71
  4. Step 4: Simplify right side
    134,792.30x = 13,833,163,579.02
  5. Step 5: Solve for x
    x = 13,833,163,579.02/134,792.30
  6. Step 6: Final answer
    x = 102,625.77

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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.