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Finding the Fourth Proportional to 1,699.97, 2,345.90 and 954.05

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Solution

The fourth proportional to 1,699.97, 2,345.90 and 954.05 is: 1,316.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699.97 : 2,345.90 = 954.05 : x
  2. Step 2: Convert to fraction form
    1,699.97/2,345.90 = 954.05/x
  3. Step 3: Cross multiply
    1,699.97x = 2,345.90 × 954.05
  4. Step 4: Simplify right side
    1,699.97x = 2,238,089.40
  5. Step 5: Solve for x
    x = 2,238,089.40/1,699.97
  6. Step 6: Final answer
    x = 1,316.55

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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.