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Finding the Fourth Proportional to 77,392.95, 106,794.81 and 43,402.83

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Solution

The fourth proportional to 77,392.95, 106,794.81 and 43,402.83 is: 59,891.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,392.95 : 106,794.81 = 43,402.83 : x
  2. Step 2: Convert to fraction form
    77,392.95/106,794.81 = 43,402.83/x
  3. Step 3: Cross multiply
    77,392.95x = 106,794.81 × 43,402.83
  4. Step 4: Simplify right side
    77,392.95x = 4,635,196,983.31
  5. Step 5: Solve for x
    x = 4,635,196,983.31/77,392.95
  6. Step 6: Final answer
    x = 59,891.72

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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.