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Finding the Fourth Proportional to 9,368.66, 12,927.64 and 5,176.66

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Solution

The fourth proportional to 9,368.66, 12,927.64 and 5,176.66 is: 7,143.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.66 : 12,927.64 = 5,176.66 : x
  2. Step 2: Convert to fraction form
    9,368.66/12,927.64 = 5,176.66/x
  3. Step 3: Cross multiply
    9,368.66x = 12,927.64 × 5,176.66
  4. Step 4: Simplify right side
    9,368.66x = 66,921,996.88
  5. Step 5: Solve for x
    x = 66,921,996.88/9,368.66
  6. Step 6: Final answer
    x = 7,143.18

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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.