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Finding the Fourth Proportional to 605,897.40, 908,846.10 and 206,405.40

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Solution

The fourth proportional to 605,897.40, 908,846.10 and 206,405.40 is: 309,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,897.40 : 908,846.10 = 206,405.40 : x
  2. Step 2: Convert to fraction form
    605,897.40/908,846.10 = 206,405.40/x
  3. Step 3: Cross multiply
    605,897.40x = 908,846.10 × 206,405.40
  4. Step 4: Simplify right side
    605,897.40x = 187,590,742,808.94
  5. Step 5: Solve for x
    x = 187,590,742,808.94/605,897.40
  6. Step 6: Final answer
    x = 309,608.10

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Similar ratio
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1.5x scale

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.