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Finding the Fourth Proportional to 9,201.61, 12,695.99 and 5,424.95

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Solution

The fourth proportional to 9,201.61, 12,695.99 and 5,424.95 is: 7,485.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,201.61 : 12,695.99 = 5,424.95 : x
  2. Step 2: Convert to fraction form
    9,201.61/12,695.99 = 5,424.95/x
  3. Step 3: Cross multiply
    9,201.61x = 12,695.99 × 5,424.95
  4. Step 4: Simplify right side
    9,201.61x = 68,875,156.25
  5. Step 5: Solve for x
    x = 68,875,156.25/9,201.61
  6. Step 6: Final answer
    x = 7,485.12

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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.