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Finding the Fourth Proportional to 8,966.22, 12,374.19 and 5,429.22

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Solution

The fourth proportional to 8,966.22, 12,374.19 and 5,429.22 is: 7,492.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,966.22 : 12,374.19 = 5,429.22 : x
  2. Step 2: Convert to fraction form
    8,966.22/12,374.19 = 5,429.22/x
  3. Step 3: Cross multiply
    8,966.22x = 12,374.19 × 5,429.22
  4. Step 4: Simplify right side
    8,966.22x = 67,182,199.83
  5. Step 5: Solve for x
    x = 67,182,199.83/8,966.22
  6. Step 6: Final answer
    x = 7,492.81

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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.