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Finding the Fourth Proportional to 4,914,951.53, 7,372,420.94 and 1,320,718.52

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Solution

The fourth proportional to 4,914,951.53, 7,372,420.94 and 1,320,718.52 is: 1,981,076.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,914,951.53 : 7,372,420.94 = 1,320,718.52 : x
  2. Step 2: Convert to fraction form
    4,914,951.53/7,372,420.94 = 1,320,718.52/x
  3. Step 3: Cross multiply
    4,914,951.53x = 7,372,420.94 × 1,320,718.52
  4. Step 4: Simplify right side
    4,914,951.53x = 9,736,892,872,693.81
  5. Step 5: Solve for x
    x = 9,736,892,872,693.81/4,914,951.53
  6. Step 6: Final answer
    x = 1,981,076.07

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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.