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Finding the Fourth Proportional to 9,292.12, 12,822.98 and 5,313.60

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Solution

The fourth proportional to 9,292.12, 12,822.98 and 5,313.60 is: 7,332.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,292.12 : 12,822.98 = 5,313.60 : x
  2. Step 2: Convert to fraction form
    9,292.12/12,822.98 = 5,313.60/x
  3. Step 3: Cross multiply
    9,292.12x = 12,822.98 × 5,313.60
  4. Step 4: Simplify right side
    9,292.12x = 68,136,159.96
  5. Step 5: Solve for x
    x = 68,136,159.96/9,292.12
  6. Step 6: Final answer
    x = 7,332.68

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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.