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Finding the Fourth Proportional to 56,375.66, 77,778.42 and 33,698.90

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Solution

The fourth proportional to 56,375.66, 77,778.42 and 33,698.90 is: 46,492.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,375.66 : 77,778.42 = 33,698.90 : x
  2. Step 2: Convert to fraction form
    56,375.66/77,778.42 = 33,698.90/x
  3. Step 3: Cross multiply
    56,375.66x = 77,778.42 × 33,698.90
  4. Step 4: Simplify right side
    56,375.66x = 2,621,047,197.74
  5. Step 5: Solve for x
    x = 2,621,047,197.74/56,375.66
  6. Step 6: Final answer
    x = 46,492.53

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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.