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Finding the Fourth Proportional to 15,972.42, 22,041.95 and 8,704.47

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Solution

The fourth proportional to 15,972.42, 22,041.95 and 8,704.47 is: 12,012.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,972.42 : 22,041.95 = 8,704.47 : x
  2. Step 2: Convert to fraction form
    15,972.42/22,041.95 = 8,704.47/x
  3. Step 3: Cross multiply
    15,972.42x = 22,041.95 × 8,704.47
  4. Step 4: Simplify right side
    15,972.42x = 191,863,492.52
  5. Step 5: Solve for x
    x = 191,863,492.52/15,972.42
  6. Step 6: Final answer
    x = 12,012.17

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1.5x scale

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.