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Finding the Fourth Proportional to 52,792.95, 72,854.29 and 28,920.48

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Solution

The fourth proportional to 52,792.95, 72,854.29 and 28,920.48 is: 39,910.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,792.95 : 72,854.29 = 28,920.48 : x
  2. Step 2: Convert to fraction form
    52,792.95/72,854.29 = 28,920.48/x
  3. Step 3: Cross multiply
    52,792.95x = 72,854.29 × 28,920.48
  4. Step 4: Simplify right side
    52,792.95x = 2,106,981,036.86
  5. Step 5: Solve for x
    x = 2,106,981,036.86/52,792.95
  6. Step 6: Final answer
    x = 39,910.27

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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.