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Finding the Fourth Proportional to 285,549.90, 393,424.47 and 188,581.56

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Solution

The fourth proportional to 285,549.90, 393,424.47 and 188,581.56 is: 259,823.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,549.90 : 393,424.47 = 188,581.56 : x
  2. Step 2: Convert to fraction form
    285,549.90/393,424.47 = 188,581.56/x
  3. Step 3: Cross multiply
    285,549.90x = 393,424.47 × 188,581.56
  4. Step 4: Simplify right side
    285,549.90x = 74,192,600,294.77
  5. Step 5: Solve for x
    x = 74,192,600,294.77/285,549.90
  6. Step 6: Final answer
    x = 259,823.59

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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.