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Finding the Fourth Proportional to 865,103.87, 1,193,670.20 and 483,071.87

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Solution

The fourth proportional to 865,103.87, 1,193,670.20 and 483,071.87 is: 666,542.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,103.87 : 1,193,670.20 = 483,071.87 : x
  2. Step 2: Convert to fraction form
    865,103.87/1,193,670.20 = 483,071.87/x
  3. Step 3: Cross multiply
    865,103.87x = 1,193,670.20 × 483,071.87
  4. Step 4: Simplify right side
    865,103.87x = 576,628,493,261.92
  5. Step 5: Solve for x
    x = 576,628,493,261.92/865,103.87
  6. Step 6: Final answer
    x = 666,542.50

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Double scale
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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.