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Finding the Fourth Proportional to 22,661.59, 31,269.63 and 12,590.19

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Solution

The fourth proportional to 22,661.59, 31,269.63 and 12,590.19 is: 17,372.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,661.59 : 31,269.63 = 12,590.19 : x
  2. Step 2: Convert to fraction form
    22,661.59/31,269.63 = 12,590.19/x
  3. Step 3: Cross multiply
    22,661.59x = 31,269.63 × 12,590.19
  4. Step 4: Simplify right side
    22,661.59x = 393,690,582.93
  5. Step 5: Solve for x
    x = 393,690,582.93/22,661.59
  6. Step 6: Final answer
    x = 17,372.59

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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.