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Finding the Fourth Proportional to 132,790.80, 199,221.66 and 57,916.98

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Solution

The fourth proportional to 132,790.80, 199,221.66 and 57,916.98 is: 86,890.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,790.80 : 199,221.66 = 57,916.98 : x
  2. Step 2: Convert to fraction form
    132,790.80/199,221.66 = 57,916.98/x
  3. Step 3: Cross multiply
    132,790.80x = 199,221.66 × 57,916.98
  4. Step 4: Simplify right side
    132,790.80x = 11,538,316,897.79
  5. Step 5: Solve for x
    x = 11,538,316,897.79/132,790.80
  6. Step 6: Final answer
    x = 86,890.94

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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.