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Finding the Fourth Proportional to 8,935.80, 12,331.08 and 4,957.08

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Solution

The fourth proportional to 8,935.80, 12,331.08 and 4,957.08 is: 6,840.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.80 : 12,331.08 = 4,957.08 : x
  2. Step 2: Convert to fraction form
    8,935.80/12,331.08 = 4,957.08/x
  3. Step 3: Cross multiply
    8,935.80x = 12,331.08 × 4,957.08
  4. Step 4: Simplify right side
    8,935.80x = 61,126,150.05
  5. Step 5: Solve for x
    x = 61,126,150.05/8,935.80
  6. Step 6: Final answer
    x = 6,840.59

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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.