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Finding the Fourth Proportional to 7,180.86, 9,909.78 and 4,348.74

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Solution

The fourth proportional to 7,180.86, 9,909.78 and 4,348.74 is: 6,001.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.86 : 9,909.78 = 4,348.74 : x
  2. Step 2: Convert to fraction form
    7,180.86/9,909.78 = 4,348.74/x
  3. Step 3: Cross multiply
    7,180.86x = 9,909.78 × 4,348.74
  4. Step 4: Simplify right side
    7,180.86x = 43,095,056.68
  5. Step 5: Solve for x
    x = 43,095,056.68/7,180.86
  6. Step 6: Final answer
    x = 6,001.38

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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.