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Finding the Fourth Proportional to 8,953.17, 12,355.54 and 4,974.65

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Solution

The fourth proportional to 8,953.17, 12,355.54 and 4,974.65 is: 6,865.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.17 : 12,355.54 = 4,974.65 : x
  2. Step 2: Convert to fraction form
    8,953.17/12,355.54 = 4,974.65/x
  3. Step 3: Cross multiply
    8,953.17x = 12,355.54 × 4,974.65
  4. Step 4: Simplify right side
    8,953.17x = 61,464,487.06
  5. Step 5: Solve for x
    x = 61,464,487.06/8,953.17
  6. Step 6: Final answer
    x = 6,865.11

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Double scale
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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.