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Finding the Fourth Proportional to 636,543.60, 954,815.40 and 193,311.60

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Solution

The fourth proportional to 636,543.60, 954,815.40 and 193,311.60 is: 289,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,543.60 : 954,815.40 = 193,311.60 : x
  2. Step 2: Convert to fraction form
    636,543.60/954,815.40 = 193,311.60/x
  3. Step 3: Cross multiply
    636,543.60x = 954,815.40 × 193,311.60
  4. Step 4: Simplify right side
    636,543.60x = 184,576,892,678.64
  5. Step 5: Solve for x
    x = 184,576,892,678.64/636,543.60
  6. Step 6: Final answer
    x = 289,967.40

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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.