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Finding the Fourth Proportional to 11,222.63, 15,487.55 and 6,916.67

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Solution

The fourth proportional to 11,222.63, 15,487.55 and 6,916.67 is: 9,545.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,222.63 : 15,487.55 = 6,916.67 : x
  2. Step 2: Convert to fraction form
    11,222.63/15,487.55 = 6,916.67/x
  3. Step 3: Cross multiply
    11,222.63x = 15,487.55 × 6,916.67
  4. Step 4: Simplify right side
    11,222.63x = 107,122,272.46
  5. Step 5: Solve for x
    x = 107,122,272.46/11,222.63
  6. Step 6: Final answer
    x = 9,545.20

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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.