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Finding the Fourth Proportional to 61,364.68, 84,620.90 and 57,792.92

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Solution

The fourth proportional to 61,364.68, 84,620.90 and 57,792.92 is: 79,695.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,364.68 : 84,620.90 = 57,792.92 : x
  2. Step 2: Convert to fraction form
    61,364.68/84,620.90 = 57,792.92/x
  3. Step 3: Cross multiply
    61,364.68x = 84,620.90 × 57,792.92
  4. Step 4: Simplify right side
    61,364.68x = 4,890,488,904.03
  5. Step 5: Solve for x
    x = 4,890,488,904.03/61,364.68
  6. Step 6: Final answer
    x = 79,695.50

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1.5x scale

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.