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Finding the Fourth Proportional to 56,611.70, 84,917.55 and 53,155.70

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Solution

The fourth proportional to 56,611.70, 84,917.55 and 53,155.70 is: 79,733.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,611.70 : 84,917.55 = 53,155.70 : x
  2. Step 2: Convert to fraction form
    56,611.70/84,917.55 = 53,155.70/x
  3. Step 3: Cross multiply
    56,611.70x = 84,917.55 × 53,155.70
  4. Step 4: Simplify right side
    56,611.70x = 4,513,851,812.54
  5. Step 5: Solve for x
    x = 4,513,851,812.54/56,611.70
  6. Step 6: Final answer
    x = 79,733.55

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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.