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Finding the Fourth Proportional to 7,039.15, 9,712.58 and 4,054.19

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Solution

The fourth proportional to 7,039.15, 9,712.58 and 4,054.19 is: 5,593.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.15 : 9,712.58 = 4,054.19 : x
  2. Step 2: Convert to fraction form
    7,039.15/9,712.58 = 4,054.19/x
  3. Step 3: Cross multiply
    7,039.15x = 9,712.58 × 4,054.19
  4. Step 4: Simplify right side
    7,039.15x = 39,376,644.71
  5. Step 5: Solve for x
    x = 39,376,644.71/7,039.15
  6. Step 6: Final answer
    x = 5,593.95

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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.