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Finding the Fourth Proportional to 8,779.77, 12,116.91 and 4,801.48

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Solution

The fourth proportional to 8,779.77, 12,116.91 and 4,801.48 is: 6,626.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.77 : 12,116.91 = 4,801.48 : x
  2. Step 2: Convert to fraction form
    8,779.77/12,116.91 = 4,801.48/x
  3. Step 3: Cross multiply
    8,779.77x = 12,116.91 × 4,801.48
  4. Step 4: Simplify right side
    8,779.77x = 58,179,101.03
  5. Step 5: Solve for x
    x = 58,179,101.03/8,779.77
  6. Step 6: Final answer
    x = 6,626.49

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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.