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Finding the Fourth Proportional to 5,616.48, 8,420.96 and 2,693.20

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Solution

The fourth proportional to 5,616.48, 8,420.96 and 2,693.20 is: 4,038.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.48 : 8,420.96 = 2,693.20 : x
  2. Step 2: Convert to fraction form
    5,616.48/8,420.96 = 2,693.20/x
  3. Step 3: Cross multiply
    5,616.48x = 8,420.96 × 2,693.20
  4. Step 4: Simplify right side
    5,616.48x = 22,679,329.47
  5. Step 5: Solve for x
    x = 22,679,329.47/5,616.48
  6. Step 6: Final answer
    x = 4,038.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.