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Finding the Fourth Proportional to 7,179.49, 9,903.21 and 4,937.48

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Solution

The fourth proportional to 7,179.49, 9,903.21 and 4,937.48 is: 6,810.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.49 : 9,903.21 = 4,937.48 : x
  2. Step 2: Convert to fraction form
    7,179.49/9,903.21 = 4,937.48/x
  3. Step 3: Cross multiply
    7,179.49x = 9,903.21 × 4,937.48
  4. Step 4: Simplify right side
    7,179.49x = 48,896,901.31
  5. Step 5: Solve for x
    x = 48,896,901.31/7,179.49
  6. Step 6: Final answer
    x = 6,810.64

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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.