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Finding the Fourth Proportional to 1,189,686.22, 1,784,598.54 and 336,686.50

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Solution

The fourth proportional to 1,189,686.22, 1,784,598.54 and 336,686.50 is: 505,049.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,686.22 : 1,784,598.54 = 336,686.50 : x
  2. Step 2: Convert to fraction form
    1,189,686.22/1,784,598.54 = 336,686.50/x
  3. Step 3: Cross multiply
    1,189,686.22x = 1,784,598.54 × 336,686.50
  4. Step 4: Simplify right side
    1,189,686.22x = 600,850,236,337.71
  5. Step 5: Solve for x
    x = 600,850,236,337.71/1,189,686.22
  6. Step 6: Final answer
    x = 505,049.34

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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.