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Finding the Fourth Proportional to 405,956.10, 608,934.15 and 169,220.10

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Solution

The fourth proportional to 405,956.10, 608,934.15 and 169,220.10 is: 253,830.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,956.10 : 608,934.15 = 169,220.10 : x
  2. Step 2: Convert to fraction form
    405,956.10/608,934.15 = 169,220.10/x
  3. Step 3: Cross multiply
    405,956.10x = 608,934.15 × 169,220.10
  4. Step 4: Simplify right side
    405,956.10x = 103,043,897,756.42
  5. Step 5: Solve for x
    x = 103,043,897,756.42/405,956.10
  6. Step 6: Final answer
    x = 253,830.15

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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.