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Finding the Fourth Proportional to 1,786,891.60, 2,680,337.40 and 1,699,800.40

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Solution

The fourth proportional to 1,786,891.60, 2,680,337.40 and 1,699,800.40 is: 2,549,700.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,891.60 : 2,680,337.40 = 1,699,800.40 : x
  2. Step 2: Convert to fraction form
    1,786,891.60/2,680,337.40 = 1,699,800.40/x
  3. Step 3: Cross multiply
    1,786,891.60x = 2,680,337.40 × 1,699,800.40
  4. Step 4: Simplify right side
    1,786,891.60x = 4,556,038,584,654.96
  5. Step 5: Solve for x
    x = 4,556,038,584,654.96/1,786,891.60
  6. Step 6: Final answer
    x = 2,549,700.60

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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.