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Finding the Fourth Proportional to 1,117.97, 1,676.95 and 468.70

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Solution

The fourth proportional to 1,117.97, 1,676.95 and 468.70 is: 703.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.97 : 1,676.95 = 468.70 : x
  2. Step 2: Convert to fraction form
    1,117.97/1,676.95 = 468.70/x
  3. Step 3: Cross multiply
    1,117.97x = 1,676.95 × 468.70
  4. Step 4: Simplify right side
    1,117.97x = 785,993.17
  5. Step 5: Solve for x
    x = 785,993.17/1,117.97
  6. Step 6: Final answer
    x = 703.05

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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.