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Finding the Fourth Proportional to 1,678,906.86, 2,316,823.88 and 914,944.02

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Solution

The fourth proportional to 1,678,906.86, 2,316,823.88 and 914,944.02 is: 1,262,585.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,906.86 : 2,316,823.88 = 914,944.02 : x
  2. Step 2: Convert to fraction form
    1,678,906.86/2,316,823.88 = 914,944.02/x
  3. Step 3: Cross multiply
    1,678,906.86x = 2,316,823.88 × 914,944.02
  4. Step 4: Simplify right side
    1,678,906.86x = 2,119,764,149,824.48
  5. Step 5: Solve for x
    x = 2,119,764,149,824.48/1,678,906.86
  6. Step 6: Final answer
    x = 1,262,585.91

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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.