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Finding the Fourth Proportional to 7,039.92, 9,714.12 and 4,054.68

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Solution

The fourth proportional to 7,039.92, 9,714.12 and 4,054.68 is: 5,594.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.92 : 9,714.12 = 4,054.68 : x
  2. Step 2: Convert to fraction form
    7,039.92/9,714.12 = 4,054.68/x
  3. Step 3: Cross multiply
    7,039.92x = 9,714.12 × 4,054.68
  4. Step 4: Simplify right side
    7,039.92x = 39,387,648.08
  5. Step 5: Solve for x
    x = 39,387,648.08/7,039.92
  6. Step 6: Final answer
    x = 5,594.90

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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.