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Finding the Fourth Proportional to 8,740.64, 13,108.66 and 5,966.80

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Solution

The fourth proportional to 8,740.64, 13,108.66 and 5,966.80 is: 8,948.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740.64 : 13,108.66 = 5,966.80 : x
  2. Step 2: Convert to fraction form
    8,740.64/13,108.66 = 5,966.80/x
  3. Step 3: Cross multiply
    8,740.64x = 13,108.66 × 5,966.80
  4. Step 4: Simplify right side
    8,740.64x = 78,216,752.49
  5. Step 5: Solve for x
    x = 78,216,752.49/8,740.64
  6. Step 6: Final answer
    x = 8,948.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.