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Finding the Fourth Proportional to 606,986.20, 910,392.90 and 207,645.40

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Solution

The fourth proportional to 606,986.20, 910,392.90 and 207,645.40 is: 311,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,986.20 : 910,392.90 = 207,645.40 : x
  2. Step 2: Convert to fraction form
    606,986.20/910,392.90 = 207,645.40/x
  3. Step 3: Cross multiply
    606,986.20x = 910,392.90 × 207,645.40
  4. Step 4: Simplify right side
    606,986.20x = 189,038,897,877.66
  5. Step 5: Solve for x
    x = 189,038,897,877.66/606,986.20
  6. Step 6: Final answer
    x = 311,438.54

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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.