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Finding the Fourth Proportional to 559,920.30, 839,880.45 and 185,943.30

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Solution

The fourth proportional to 559,920.30, 839,880.45 and 185,943.30 is: 278,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,920.30 : 839,880.45 = 185,943.30 : x
  2. Step 2: Convert to fraction form
    559,920.30/839,880.45 = 185,943.30/x
  3. Step 3: Cross multiply
    559,920.30x = 839,880.45 × 185,943.30
  4. Step 4: Simplify right side
    559,920.30x = 156,170,142,478.49
  5. Step 5: Solve for x
    x = 156,170,142,478.49/559,920.30
  6. Step 6: Final answer
    x = 278,914.95

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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.