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Finding the Fourth Proportional to 1,056.30, 1,582.77 and 708.36

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Solution

The fourth proportional to 1,056.30, 1,582.77 and 708.36 is: 1,061.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.30 : 1,582.77 = 708.36 : x
  2. Step 2: Convert to fraction form
    1,056.30/1,582.77 = 708.36/x
  3. Step 3: Cross multiply
    1,056.30x = 1,582.77 × 708.36
  4. Step 4: Simplify right side
    1,056.30x = 1,121,170.96
  5. Step 5: Solve for x
    x = 1,121,170.96/1,056.30
  6. Step 6: Final answer
    x = 1,061.41

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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.