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Finding the Fourth Proportional to 8,898.92, 12,280.38 and 5,364.08

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Solution

The fourth proportional to 8,898.92, 12,280.38 and 5,364.08 is: 7,402.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.92 : 12,280.38 = 5,364.08 : x
  2. Step 2: Convert to fraction form
    8,898.92/12,280.38 = 5,364.08/x
  3. Step 3: Cross multiply
    8,898.92x = 12,280.38 × 5,364.08
  4. Step 4: Simplify right side
    8,898.92x = 65,872,940.75
  5. Step 5: Solve for x
    x = 65,872,940.75/8,898.92
  6. Step 6: Final answer
    x = 7,402.35

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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.