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Finding the Fourth Proportional to 1,702.71, 2,349.61 and 956.53

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Solution

The fourth proportional to 1,702.71, 2,349.61 and 956.53 is: 1,319.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,702.71 : 2,349.61 = 956.53 : x
  2. Step 2: Convert to fraction form
    1,702.71/2,349.61 = 956.53/x
  3. Step 3: Cross multiply
    1,702.71x = 2,349.61 × 956.53
  4. Step 4: Simplify right side
    1,702.71x = 2,247,465.16
  5. Step 5: Solve for x
    x = 2,247,465.16/1,702.71
  6. Step 6: Final answer
    x = 1,319.93

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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.