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Finding the Fourth Proportional to 7,842.34, 10,822.35 and 4,305.46

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Solution

The fourth proportional to 7,842.34, 10,822.35 and 4,305.46 is: 5,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,842.34 : 10,822.35 = 4,305.46 : x
  2. Step 2: Convert to fraction form
    7,842.34/10,822.35 = 4,305.46/x
  3. Step 3: Cross multiply
    7,842.34x = 10,822.35 × 4,305.46
  4. Step 4: Simplify right side
    7,842.34x = 46,595,195.03
  5. Step 5: Solve for x
    x = 46,595,195.03/7,842.34
  6. Step 6: Final answer
    x = 5,941.49

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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.