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Finding the Fourth Proportional to 469,389.78, 703,803.54 and 149,403.42

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Solution

The fourth proportional to 469,389.78, 703,803.54 and 149,403.42 is: 224,015.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,389.78 : 703,803.54 = 149,403.42 : x
  2. Step 2: Convert to fraction form
    469,389.78/703,803.54 = 149,403.42/x
  3. Step 3: Cross multiply
    469,389.78x = 703,803.54 × 149,403.42
  4. Step 4: Simplify right side
    469,389.78x = 105,150,655,884.11
  5. Step 5: Solve for x
    x = 105,150,655,884.11/469,389.78
  6. Step 6: Final answer
    x = 224,015.65

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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.