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Finding the Fourth Proportional to 3,316,827.92, 4,975,269.71 and 920,859.38

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Solution

The fourth proportional to 3,316,827.92, 4,975,269.71 and 920,859.38 is: 1,381,296.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,316,827.92 : 4,975,269.71 = 920,859.38 : x
  2. Step 2: Convert to fraction form
    3,316,827.92/4,975,269.71 = 920,859.38/x
  3. Step 3: Cross multiply
    3,316,827.92x = 4,975,269.71 × 920,859.38
  4. Step 4: Simplify right side
    3,316,827.92x = 4,581,523,751,002.73
  5. Step 5: Solve for x
    x = 4,581,523,751,002.73/3,316,827.92
  6. Step 6: Final answer
    x = 1,381,296.79

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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.