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Finding the Fourth Proportional to 18,702.24, 28,058.24 and 6,224.16

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Solution

The fourth proportional to 18,702.24, 28,058.24 and 6,224.16 is: 9,337.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.24 : 28,058.24 = 6,224.16 : x
  2. Step 2: Convert to fraction form
    18,702.24/28,058.24 = 6,224.16/x
  3. Step 3: Cross multiply
    18,702.24x = 28,058.24 × 6,224.16
  4. Step 4: Simplify right side
    18,702.24x = 174,638,975.08
  5. Step 5: Solve for x
    x = 174,638,975.08/18,702.24
  6. Step 6: Final answer
    x = 9,337.86

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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.