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Finding the Fourth Proportional to 21,598, 32,400.42 and 7,557.69

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Solution

The fourth proportional to 21,598, 32,400.42 and 7,557.69 is: 11,337.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,598 : 32,400.42 = 7,557.69 : x
  2. Step 2: Convert to fraction form
    21,598/32,400.42 = 7,557.69/x
  3. Step 3: Cross multiply
    21,598x = 32,400.42 × 7,557.69
  4. Step 4: Simplify right side
    21,598x = 244,872,330.23
  5. Step 5: Solve for x
    x = 244,872,330.23/21,598
  6. Step 6: Final answer
    x = 11,337.73

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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.