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Finding the Fourth Proportional to 7,894.87, 10,894.77 and 4,358.00

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Solution

The fourth proportional to 7,894.87, 10,894.77 and 4,358.00 is: 6,013.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894.87 : 10,894.77 = 4,358.00 : x
  2. Step 2: Convert to fraction form
    7,894.87/10,894.77 = 4,358.00/x
  3. Step 3: Cross multiply
    7,894.87x = 10,894.77 × 4,358.00
  4. Step 4: Simplify right side
    7,894.87x = 47,479,434.90
  5. Step 5: Solve for x
    x = 47,479,434.90/7,894.87
  6. Step 6: Final answer
    x = 6,013.96

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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.