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Finding the Fourth Proportional to 582,442.80, 873,664.20 and 345,663.60

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Solution

The fourth proportional to 582,442.80, 873,664.20 and 345,663.60 is: 518,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,442.80 : 873,664.20 = 345,663.60 : x
  2. Step 2: Convert to fraction form
    582,442.80/873,664.20 = 345,663.60/x
  3. Step 3: Cross multiply
    582,442.80x = 873,664.20 × 345,663.60
  4. Step 4: Simplify right side
    582,442.80x = 301,993,912,563.12
  5. Step 5: Solve for x
    x = 301,993,912,563.12/582,442.80
  6. Step 6: Final answer
    x = 518,495.40

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Half scale
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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.