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Finding the Fourth Proportional to 239,255.16, 358,938.29 and 81,484.98

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Solution

The fourth proportional to 239,255.16, 358,938.29 and 81,484.98 is: 122,246.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,255.16 : 358,938.29 = 81,484.98 : x
  2. Step 2: Convert to fraction form
    239,255.16/358,938.29 = 81,484.98/x
  3. Step 3: Cross multiply
    239,255.16x = 358,938.29 × 81,484.98
  4. Step 4: Simplify right side
    239,255.16x = 29,248,079,381.88
  5. Step 5: Solve for x
    x = 29,248,079,381.88/239,255.16
  6. Step 6: Final answer
    x = 122,246.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.