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Finding the Fourth Proportional to 9,362.69, 12,921.65 and 5,330.51

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Solution

The fourth proportional to 9,362.69, 12,921.65 and 5,330.51 is: 7,356.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.69 : 12,921.65 = 5,330.51 : x
  2. Step 2: Convert to fraction form
    9,362.69/12,921.65 = 5,330.51/x
  3. Step 3: Cross multiply
    9,362.69x = 12,921.65 × 5,330.51
  4. Step 4: Simplify right side
    9,362.69x = 68,879,008.53
  5. Step 5: Solve for x
    x = 68,879,008.53/9,362.69
  6. Step 6: Final answer
    x = 7,356.76

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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.