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Finding the Fourth Proportional to 559,639.40, 839,459.10 and 185,662.40

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Solution

The fourth proportional to 559,639.40, 839,459.10 and 185,662.40 is: 278,493.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,639.40 : 839,459.10 = 185,662.40 : x
  2. Step 2: Convert to fraction form
    559,639.40/839,459.10 = 185,662.40/x
  3. Step 3: Cross multiply
    559,639.40x = 839,459.10 × 185,662.40
  4. Step 4: Simplify right side
    559,639.40x = 155,855,991,207.84
  5. Step 5: Solve for x
    x = 155,855,991,207.84/559,639.40
  6. Step 6: Final answer
    x = 278,493.60

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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.