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Finding the Fourth Proportional to 17,220.54, 25,830.54 and 9,425.10

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Solution

The fourth proportional to 17,220.54, 25,830.54 and 9,425.10 is: 14,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,220.54 : 25,830.54 = 9,425.10 : x
  2. Step 2: Convert to fraction form
    17,220.54/25,830.54 = 9,425.10/x
  3. Step 3: Cross multiply
    17,220.54x = 25,830.54 × 9,425.10
  4. Step 4: Simplify right side
    17,220.54x = 243,455,422.55
  5. Step 5: Solve for x
    x = 243,455,422.55/17,220.54
  6. Step 6: Final answer
    x = 14,137.50

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Half scale
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Double scale
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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.