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Finding the Fourth Proportional to 1,009.95, 1,393.67 and 567.83

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Solution

The fourth proportional to 1,009.95, 1,393.67 and 567.83 is: 783.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.95 : 1,393.67 = 567.83 : x
  2. Step 2: Convert to fraction form
    1,009.95/1,393.67 = 567.83/x
  3. Step 3: Cross multiply
    1,009.95x = 1,393.67 × 567.83
  4. Step 4: Simplify right side
    1,009.95x = 791,372.54
  5. Step 5: Solve for x
    x = 791,372.54/1,009.95
  6. Step 6: Final answer
    x = 783.58

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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.