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Finding the Fourth Proportional to 7,897.73, 10,899.09 and 4,312.91

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Solution

The fourth proportional to 7,897.73, 10,899.09 and 4,312.91 is: 5,951.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,897.73 : 10,899.09 = 4,312.91 : x
  2. Step 2: Convert to fraction form
    7,897.73/10,899.09 = 4,312.91/x
  3. Step 3: Cross multiply
    7,897.73x = 10,899.09 × 4,312.91
  4. Step 4: Simplify right side
    7,897.73x = 47,006,794.25
  5. Step 5: Solve for x
    x = 47,006,794.25/7,897.73
  6. Step 6: Final answer
    x = 5,951.94

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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.