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Finding the Fourth Proportional to 1,124.96, 1,551.12 and 1,026.32

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Solution

The fourth proportional to 1,124.96, 1,551.12 and 1,026.32 is: 1,415.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.96 : 1,551.12 = 1,026.32 : x
  2. Step 2: Convert to fraction form
    1,124.96/1,551.12 = 1,026.32/x
  3. Step 3: Cross multiply
    1,124.96x = 1,551.12 × 1,026.32
  4. Step 4: Simplify right side
    1,124.96x = 1,591,945.48
  5. Step 5: Solve for x
    x = 1,591,945.48/1,124.96
  6. Step 6: Final answer
    x = 1,415.11

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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.