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Finding the Fourth Proportional to 7,800.48, 10,764.64 and 4,263.68

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Solution

The fourth proportional to 7,800.48, 10,764.64 and 4,263.68 is: 5,883.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.48 : 10,764.64 = 4,263.68 : x
  2. Step 2: Convert to fraction form
    7,800.48/10,764.64 = 4,263.68/x
  3. Step 3: Cross multiply
    7,800.48x = 10,764.64 × 4,263.68
  4. Step 4: Simplify right side
    7,800.48x = 45,896,980.28
  5. Step 5: Solve for x
    x = 45,896,980.28/7,800.48
  6. Step 6: Final answer
    x = 5,883.87

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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.