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Finding the Fourth Proportional to 8,953.56, 12,355.35 and 4,974.48

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Solution

The fourth proportional to 8,953.56, 12,355.35 and 4,974.48 is: 6,864.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.56 : 12,355.35 = 4,974.48 : x
  2. Step 2: Convert to fraction form
    8,953.56/12,355.35 = 4,974.48/x
  3. Step 3: Cross multiply
    8,953.56x = 12,355.35 × 4,974.48
  4. Step 4: Simplify right side
    8,953.56x = 61,461,441.47
  5. Step 5: Solve for x
    x = 61,461,441.47/8,953.56
  6. Step 6: Final answer
    x = 6,864.47

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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.