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Finding the Fourth Proportional to 19,323.42, 28,990.17 and 5,472.42

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Solution

The fourth proportional to 19,323.42, 28,990.17 and 5,472.42 is: 8,210.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,323.42 : 28,990.17 = 5,472.42 : x
  2. Step 2: Convert to fraction form
    19,323.42/28,990.17 = 5,472.42/x
  3. Step 3: Cross multiply
    19,323.42x = 28,990.17 × 5,472.42
  4. Step 4: Simplify right side
    19,323.42x = 158,646,386.11
  5. Step 5: Solve for x
    x = 158,646,386.11/19,323.42
  6. Step 6: Final answer
    x = 8,210.06

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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.