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Finding the Fourth Proportional to 559,573.20, 839,359.80 and 382,426.20

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Solution

The fourth proportional to 559,573.20, 839,359.80 and 382,426.20 is: 573,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,573.20 : 839,359.80 = 382,426.20 : x
  2. Step 2: Convert to fraction form
    559,573.20/839,359.80 = 382,426.20/x
  3. Step 3: Cross multiply
    559,573.20x = 839,359.80 × 382,426.20
  4. Step 4: Simplify right side
    559,573.20x = 320,993,178,746.76
  5. Step 5: Solve for x
    x = 320,993,178,746.76/559,573.20
  6. Step 6: Final answer
    x = 573,639.30

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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.