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Finding the Fourth Proportional to 56,604.53, 78,115.07 and 31,113.26

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Solution

The fourth proportional to 56,604.53, 78,115.07 and 31,113.26 is: 42,936.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,604.53 : 78,115.07 = 31,113.26 : x
  2. Step 2: Convert to fraction form
    56,604.53/78,115.07 = 31,113.26/x
  3. Step 3: Cross multiply
    56,604.53x = 78,115.07 × 31,113.26
  4. Step 4: Simplify right side
    56,604.53x = 2,430,413,936.69
  5. Step 5: Solve for x
    x = 2,430,413,936.69/56,604.53
  6. Step 6: Final answer
    x = 42,936.74

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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.