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Finding the Fourth Proportional to 8,607.34, 11,880.65 and 5,623.66

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Solution

The fourth proportional to 8,607.34, 11,880.65 and 5,623.66 is: 7,762.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.34 : 11,880.65 = 5,623.66 : x
  2. Step 2: Convert to fraction form
    8,607.34/11,880.65 = 5,623.66/x
  3. Step 3: Cross multiply
    8,607.34x = 11,880.65 × 5,623.66
  4. Step 4: Simplify right side
    8,607.34x = 66,812,648.66
  5. Step 5: Solve for x
    x = 66,812,648.66/8,607.34
  6. Step 6: Final answer
    x = 7,762.29

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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.