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Finding the Fourth Proportional to 60,778.44, 91,089.90 and 31,190.76

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Solution

The fourth proportional to 60,778.44, 91,089.90 and 31,190.76 is: 46,746.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,778.44 : 91,089.90 = 31,190.76 : x
  2. Step 2: Convert to fraction form
    60,778.44/91,089.90 = 31,190.76/x
  3. Step 3: Cross multiply
    60,778.44x = 91,089.90 × 31,190.76
  4. Step 4: Simplify right side
    60,778.44x = 2,841,163,209.32
  5. Step 5: Solve for x
    x = 2,841,163,209.32/60,778.44
  6. Step 6: Final answer
    x = 46,746.23

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1.5x scale

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.