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Finding the Fourth Proportional to 8,705.22, 12,013.10 and 4,928.32

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Solution

The fourth proportional to 8,705.22, 12,013.10 and 4,928.32 is: 6,801.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.22 : 12,013.10 = 4,928.32 : x
  2. Step 2: Convert to fraction form
    8,705.22/12,013.10 = 4,928.32/x
  3. Step 3: Cross multiply
    8,705.22x = 12,013.10 × 4,928.32
  4. Step 4: Simplify right side
    8,705.22x = 59,204,400.99
  5. Step 5: Solve for x
    x = 59,204,400.99/8,705.22
  6. Step 6: Final answer
    x = 6,801.02

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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.