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Finding the Fourth Proportional to 14,364.55, 19,822.68 and 8,702.65

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Solution

The fourth proportional to 14,364.55, 19,822.68 and 8,702.65 is: 12,009.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,364.55 : 19,822.68 = 8,702.65 : x
  2. Step 2: Convert to fraction form
    14,364.55/19,822.68 = 8,702.65/x
  3. Step 3: Cross multiply
    14,364.55x = 19,822.68 × 8,702.65
  4. Step 4: Simplify right side
    14,364.55x = 172,509,846.10
  5. Step 5: Solve for x
    x = 172,509,846.10/14,364.55
  6. Step 6: Final answer
    x = 12,009.42

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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.