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Finding the Fourth Proportional to 156,661.70, 234,985.25 and 38,326.77

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Solution

The fourth proportional to 156,661.70, 234,985.25 and 38,326.77 is: 57,488.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,661.70 : 234,985.25 = 38,326.77 : x
  2. Step 2: Convert to fraction form
    156,661.70/234,985.25 = 38,326.77/x
  3. Step 3: Cross multiply
    156,661.70x = 234,985.25 × 38,326.77
  4. Step 4: Simplify right side
    156,661.70x = 9,006,225,725.96
  5. Step 5: Solve for x
    x = 9,006,225,725.96/156,661.70
  6. Step 6: Final answer
    x = 57,488.37

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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.