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Finding the Fourth Proportional to 1,700.78, 2,347.07 and 1,037.64

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Solution

The fourth proportional to 1,700.78, 2,347.07 and 1,037.64 is: 1,431.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,700.78 : 2,347.07 = 1,037.64 : x
  2. Step 2: Convert to fraction form
    1,700.78/2,347.07 = 1,037.64/x
  3. Step 3: Cross multiply
    1,700.78x = 2,347.07 × 1,037.64
  4. Step 4: Simplify right side
    1,700.78x = 2,435,413.71
  5. Step 5: Solve for x
    x = 2,435,413.71/1,700.78
  6. Step 6: Final answer
    x = 1,431.94

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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.