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Finding the Fourth Proportional to 19,702.66, 29,362.88 and 19,072.23

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Solution

The fourth proportional to 19,702.66, 29,362.88 and 19,072.23 is: 28,423.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,702.66 : 29,362.88 = 19,072.23 : x
  2. Step 2: Convert to fraction form
    19,702.66/29,362.88 = 19,072.23/x
  3. Step 3: Cross multiply
    19,702.66x = 29,362.88 × 19,072.23
  4. Step 4: Simplify right side
    19,702.66x = 560,015,538.39
  5. Step 5: Solve for x
    x = 560,015,538.39/19,702.66
  6. Step 6: Final answer
    x = 28,423.35

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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.