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Finding the Fourth Proportional to 7,770.65, 10,723.58 and 4,233.92

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Solution

The fourth proportional to 7,770.65, 10,723.58 and 4,233.92 is: 5,842.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.65 : 10,723.58 = 4,233.92 : x
  2. Step 2: Convert to fraction form
    7,770.65/10,723.58 = 4,233.92/x
  3. Step 3: Cross multiply
    7,770.65x = 10,723.58 × 4,233.92
  4. Step 4: Simplify right side
    7,770.65x = 45,402,801.35
  5. Step 5: Solve for x
    x = 45,402,801.35/7,770.65
  6. Step 6: Final answer
    x = 5,842.86

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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.