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Finding the Fourth Proportional to 285,314.00, 393,745.18 and 157,989.59

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Solution

The fourth proportional to 285,314.00, 393,745.18 and 157,989.59 is: 218,032.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,314.00 : 393,745.18 = 157,989.59 : x
  2. Step 2: Convert to fraction form
    285,314.00/393,745.18 = 157,989.59/x
  3. Step 3: Cross multiply
    285,314.00x = 393,745.18 × 157,989.59
  4. Step 4: Simplify right side
    285,314.00x = 62,207,637,188.98
  5. Step 5: Solve for x
    x = 62,207,637,188.98/285,314.00
  6. Step 6: Final answer
    x = 218,032.20

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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.