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Finding the Fourth Proportional to 285,364.99, 393,802.87 and 158,040.60

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Solution

The fourth proportional to 285,364.99, 393,802.87 and 158,040.60 is: 218,095.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,364.99 : 393,802.87 = 158,040.60 : x
  2. Step 2: Convert to fraction form
    285,364.99/393,802.87 = 158,040.60/x
  3. Step 3: Cross multiply
    285,364.99x = 393,802.87 × 158,040.60
  4. Step 4: Simplify right side
    285,364.99x = 62,236,841,856.52
  5. Step 5: Solve for x
    x = 62,236,841,856.52/285,364.99
  6. Step 6: Final answer
    x = 218,095.58

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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.