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Finding the Fourth Proportional to 14,702.88, 21,898.68 and 14,631.20

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Solution

The fourth proportional to 14,702.88, 21,898.68 and 14,631.20 is: 21,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,702.88 : 21,898.68 = 14,631.20 : x
  2. Step 2: Convert to fraction form
    14,702.88/21,898.68 = 14,631.20/x
  3. Step 3: Cross multiply
    14,702.88x = 21,898.68 × 14,631.20
  4. Step 4: Simplify right side
    14,702.88x = 320,403,857.32
  5. Step 5: Solve for x
    x = 320,403,857.32/14,702.88
  6. Step 6: Final answer
    x = 21,791.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.