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Finding the Fourth Proportional to 4,945.74, 7,421.52 and 4,906.14

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Solution

The fourth proportional to 4,945.74, 7,421.52 and 4,906.14 is: 7,362.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,945.74 : 7,421.52 = 4,906.14 : x
  2. Step 2: Convert to fraction form
    4,945.74/7,421.52 = 4,906.14/x
  3. Step 3: Cross multiply
    4,945.74x = 7,421.52 × 4,906.14
  4. Step 4: Simplify right side
    4,945.74x = 36,411,016.13
  5. Step 5: Solve for x
    x = 36,411,016.13/4,945.74
  6. Step 6: Final answer
    x = 7,362.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.