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Finding the Fourth Proportional to 9,409.54, 12,985.18 and 5,632.86

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Solution

The fourth proportional to 9,409.54, 12,985.18 and 5,632.86 is: 7,773.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,409.54 : 12,985.18 = 5,632.86 : x
  2. Step 2: Convert to fraction form
    9,409.54/12,985.18 = 5,632.86/x
  3. Step 3: Cross multiply
    9,409.54x = 12,985.18 × 5,632.86
  4. Step 4: Simplify right side
    9,409.54x = 73,143,701.01
  5. Step 5: Solve for x
    x = 73,143,701.01/9,409.54
  6. Step 6: Final answer
    x = 7,773.36

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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.