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Finding the Fourth Proportional to 8,822.69, 12,172.93 and 5,045.07

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Solution

The fourth proportional to 8,822.69, 12,172.93 and 5,045.07 is: 6,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,822.69 : 12,172.93 = 5,045.07 : x
  2. Step 2: Convert to fraction form
    8,822.69/12,172.93 = 5,045.07/x
  3. Step 3: Cross multiply
    8,822.69x = 12,172.93 × 5,045.07
  4. Step 4: Simplify right side
    8,822.69x = 61,413,345.37
  5. Step 5: Solve for x
    x = 61,413,345.37/8,822.69
  6. Step 6: Final answer
    x = 6,960.84

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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.