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Finding the Fourth Proportional to 1,587.56, 2,190.85 and 924.48

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Solution

The fourth proportional to 1,587.56, 2,190.85 and 924.48 is: 1,275.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.56 : 2,190.85 = 924.48 : x
  2. Step 2: Convert to fraction form
    1,587.56/2,190.85 = 924.48/x
  3. Step 3: Cross multiply
    1,587.56x = 2,190.85 × 924.48
  4. Step 4: Simplify right side
    1,587.56x = 2,025,391.30
  5. Step 5: Solve for x
    x = 2,025,391.30/1,587.56
  6. Step 6: Final answer
    x = 1,275.79

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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.