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Finding the Fourth Proportional to 1,025.99, 1,415.85 and 560.24

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Solution

The fourth proportional to 1,025.99, 1,415.85 and 560.24 is: 773.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.99 : 1,415.85 = 560.24 : x
  2. Step 2: Convert to fraction form
    1,025.99/1,415.85 = 560.24/x
  3. Step 3: Cross multiply
    1,025.99x = 1,415.85 × 560.24
  4. Step 4: Simplify right side
    1,025.99x = 793,208.72
  5. Step 5: Solve for x
    x = 793,208.72/1,025.99
  6. Step 6: Final answer
    x = 773.12

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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.