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Finding the Fourth Proportional to 5,223.72, 7,210 and 3,547.92

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Solution

The fourth proportional to 5,223.72, 7,210 and 3,547.92 is: 4,896.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,223.72 : 7,210 = 3,547.92 : x
  2. Step 2: Convert to fraction form
    5,223.72/7,210 = 3,547.92/x
  3. Step 3: Cross multiply
    5,223.72x = 7,210 × 3,547.92
  4. Step 4: Simplify right side
    5,223.72x = 25,580,503.20
  5. Step 5: Solve for x
    x = 25,580,503.20/5,223.72
  6. Step 6: Final answer
    x = 4,896.99

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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.