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Finding the Fourth Proportional to 9,332.01, 12,878.06 and 5,139.99

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Solution

The fourth proportional to 9,332.01, 12,878.06 and 5,139.99 is: 7,093.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,332.01 : 12,878.06 = 5,139.99 : x
  2. Step 2: Convert to fraction form
    9,332.01/12,878.06 = 5,139.99/x
  3. Step 3: Cross multiply
    9,332.01x = 12,878.06 × 5,139.99
  4. Step 4: Simplify right side
    9,332.01x = 66,193,073.92
  5. Step 5: Solve for x
    x = 66,193,073.92/9,332.01
  6. Step 6: Final answer
    x = 7,093.12

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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.