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Finding the Fourth Proportional to 9,042.84, 12,479.40 and 5,063.92

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Solution

The fourth proportional to 9,042.84, 12,479.40 and 5,063.92 is: 6,988.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,042.84 : 12,479.40 = 5,063.92 : x
  2. Step 2: Convert to fraction form
    9,042.84/12,479.40 = 5,063.92/x
  3. Step 3: Cross multiply
    9,042.84x = 12,479.40 × 5,063.92
  4. Step 4: Simplify right side
    9,042.84x = 63,194,683.25
  5. Step 5: Solve for x
    x = 63,194,683.25/9,042.84
  6. Step 6: Final answer
    x = 6,988.37

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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.