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Finding the Fourth Proportional to 21,756.59, 32,618.92 and 6,956.98

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Solution

The fourth proportional to 21,756.59, 32,618.92 and 6,956.98 is: 10,430.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.59 : 32,618.92 = 6,956.98 : x
  2. Step 2: Convert to fraction form
    21,756.59/32,618.92 = 6,956.98/x
  3. Step 3: Cross multiply
    21,756.59x = 32,618.92 × 6,956.98
  4. Step 4: Simplify right side
    21,756.59x = 226,929,174.06
  5. Step 5: Solve for x
    x = 226,929,174.06/21,756.59
  6. Step 6: Final answer
    x = 10,430.36

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1.5x scale

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.