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Finding the Fourth Proportional to 3,315.24, 4,973.94 and 1,584

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Solution

The fourth proportional to 3,315.24, 4,973.94 and 1,584 is: 2,376.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.24 : 4,973.94 = 1,584 : x
  2. Step 2: Convert to fraction form
    3,315.24/4,973.94 = 1,584/x
  3. Step 3: Cross multiply
    3,315.24x = 4,973.94 × 1,584
  4. Step 4: Simplify right side
    3,315.24x = 7,878,720.96
  5. Step 5: Solve for x
    x = 7,878,720.96/3,315.24
  6. Step 6: Final answer
    x = 2,376.52

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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.