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Finding the Fourth Proportional to 1,048.54, 1,562.42 and 933.70

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Solution

The fourth proportional to 1,048.54, 1,562.42 and 933.70 is: 1,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.54 : 1,562.42 = 933.70 : x
  2. Step 2: Convert to fraction form
    1,048.54/1,562.42 = 933.70/x
  3. Step 3: Cross multiply
    1,048.54x = 1,562.42 × 933.70
  4. Step 4: Simplify right side
    1,048.54x = 1,458,831.55
  5. Step 5: Solve for x
    x = 1,458,831.55/1,048.54
  6. Step 6: Final answer
    x = 1,391.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.