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Finding the Fourth Proportional to 8,894.88, 12,275.20 and 4,916.48

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Solution

The fourth proportional to 8,894.88, 12,275.20 and 4,916.48 is: 6,784.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,894.88 : 12,275.20 = 4,916.48 : x
  2. Step 2: Convert to fraction form
    8,894.88/12,275.20 = 4,916.48/x
  3. Step 3: Cross multiply
    8,894.88x = 12,275.20 × 4,916.48
  4. Step 4: Simplify right side
    8,894.88x = 60,350,775.30
  5. Step 5: Solve for x
    x = 60,350,775.30/8,894.88
  6. Step 6: Final answer
    x = 6,784.89

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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.