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Finding the Fourth Proportional to 12,831.14, 17,702.06 and 7,793.58

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Solution

The fourth proportional to 12,831.14, 17,702.06 and 7,793.58 is: 10,752.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.14 : 17,702.06 = 7,793.58 : x
  2. Step 2: Convert to fraction form
    12,831.14/17,702.06 = 7,793.58/x
  3. Step 3: Cross multiply
    12,831.14x = 17,702.06 × 7,793.58
  4. Step 4: Simplify right side
    12,831.14x = 137,962,420.77
  5. Step 5: Solve for x
    x = 137,962,420.77/12,831.14
  6. Step 6: Final answer
    x = 10,752.16

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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.