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Finding the Fourth Proportional to 2,457.68, 3,686.66 and 702.55

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Solution

The fourth proportional to 2,457.68, 3,686.66 and 702.55 is: 1,053.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,457.68 : 3,686.66 = 702.55 : x
  2. Step 2: Convert to fraction form
    2,457.68/3,686.66 = 702.55/x
  3. Step 3: Cross multiply
    2,457.68x = 3,686.66 × 702.55
  4. Step 4: Simplify right side
    2,457.68x = 2,590,050.25
  5. Step 5: Solve for x
    x = 2,590,050.25/2,457.68
  6. Step 6: Final answer
    x = 1,053.86

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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.