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Finding the Fourth Proportional to 8,607.91, 11,877.96 and 4,830.31

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Solution

The fourth proportional to 8,607.91, 11,877.96 and 4,830.31 is: 6,665.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.91 : 11,877.96 = 4,830.31 : x
  2. Step 2: Convert to fraction form
    8,607.91/11,877.96 = 4,830.31/x
  3. Step 3: Cross multiply
    8,607.91x = 11,877.96 × 4,830.31
  4. Step 4: Simplify right side
    8,607.91x = 57,374,228.97
  5. Step 5: Solve for x
    x = 57,374,228.97/8,607.91
  6. Step 6: Final answer
    x = 6,665.29

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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.