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Finding the Fourth Proportional to 592,918.92, 818,221.50 and 320,980.32

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Solution

The fourth proportional to 592,918.92, 818,221.50 and 320,980.32 is: 442,949.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,918.92 : 818,221.50 = 320,980.32 : x
  2. Step 2: Convert to fraction form
    592,918.92/818,221.50 = 320,980.32/x
  3. Step 3: Cross multiply
    592,918.92x = 818,221.50 × 320,980.32
  4. Step 4: Simplify right side
    592,918.92x = 262,632,998,900.88
  5. Step 5: Solve for x
    x = 262,632,998,900.88/592,918.92
  6. Step 6: Final answer
    x = 442,949.26

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.