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Finding the Fourth Proportional to 6,363.42, 8,775.78 and 4,123.08

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Solution

The fourth proportional to 6,363.42, 8,775.78 and 4,123.08 is: 5,686.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,363.42 : 8,775.78 = 4,123.08 : x
  2. Step 2: Convert to fraction form
    6,363.42/8,775.78 = 4,123.08/x
  3. Step 3: Cross multiply
    6,363.42x = 8,775.78 × 4,123.08
  4. Step 4: Simplify right side
    6,363.42x = 36,183,243.00
  5. Step 5: Solve for x
    x = 36,183,243.00/6,363.42
  6. Step 6: Final answer
    x = 5,686.13

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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.