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Finding the Fourth Proportional to 56,805.81, 78,392.17 and 34,157.77

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Solution

The fourth proportional to 56,805.81, 78,392.17 and 34,157.77 is: 47,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,805.81 : 78,392.17 = 34,157.77 : x
  2. Step 2: Convert to fraction form
    56,805.81/78,392.17 = 34,157.77/x
  3. Step 3: Cross multiply
    56,805.81x = 78,392.17 × 34,157.77
  4. Step 4: Simplify right side
    56,805.81x = 2,677,701,712.66
  5. Step 5: Solve for x
    x = 2,677,701,712.66/56,805.81
  6. Step 6: Final answer
    x = 47,137.81

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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.