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Finding the Fourth Proportional to 7,955.66, 10,980.78 and 4,600.42

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Solution

The fourth proportional to 7,955.66, 10,980.78 and 4,600.42 is: 6,349.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.66 : 10,980.78 = 4,600.42 : x
  2. Step 2: Convert to fraction form
    7,955.66/10,980.78 = 4,600.42/x
  3. Step 3: Cross multiply
    7,955.66x = 10,980.78 × 4,600.42
  4. Step 4: Simplify right side
    7,955.66x = 50,516,199.93
  5. Step 5: Solve for x
    x = 50,516,199.93/7,955.66
  6. Step 6: Final answer
    x = 6,349.72

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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.