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Finding the Fourth Proportional to 865,663.56, 1,194,613.20 and 483,690.63

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Solution

The fourth proportional to 865,663.56, 1,194,613.20 and 483,690.63 is: 667,491.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,663.56 : 1,194,613.20 = 483,690.63 : x
  2. Step 2: Convert to fraction form
    865,663.56/1,194,613.20 = 483,690.63/x
  3. Step 3: Cross multiply
    865,663.56x = 1,194,613.20 × 483,690.63
  4. Step 4: Simplify right side
    865,663.56x = 577,823,211,314.32
  5. Step 5: Solve for x
    x = 577,823,211,314.32/865,663.56
  6. Step 6: Final answer
    x = 667,491.67

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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.