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Finding the Fourth Proportional to 243,611.16, 336,190.32 and 136,193.28

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Solution

The fourth proportional to 243,611.16, 336,190.32 and 136,193.28 is: 187,950.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,611.16 : 336,190.32 = 136,193.28 : x
  2. Step 2: Convert to fraction form
    243,611.16/336,190.32 = 136,193.28/x
  3. Step 3: Cross multiply
    243,611.16x = 336,190.32 × 136,193.28
  4. Step 4: Simplify right side
    243,611.16x = 45,786,862,385.05
  5. Step 5: Solve for x
    x = 45,786,862,385.05/243,611.16
  6. Step 6: Final answer
    x = 187,950.59

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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.