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Finding the Fourth Proportional to 605,803.40, 908,705.10 and 156,523.40

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Solution

The fourth proportional to 605,803.40, 908,705.10 and 156,523.40 is: 234,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,803.40 : 908,705.10 = 156,523.40 : x
  2. Step 2: Convert to fraction form
    605,803.40/908,705.10 = 156,523.40/x
  3. Step 3: Cross multiply
    605,803.40x = 908,705.10 × 156,523.40
  4. Step 4: Simplify right side
    605,803.40x = 142,233,611,849.34
  5. Step 5: Solve for x
    x = 142,233,611,849.34/605,803.40
  6. Step 6: Final answer
    x = 234,785.10

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Double scale
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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.