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Finding the Fourth Proportional to 160,588.80, 240,813.54 and 85,692.56

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Solution

The fourth proportional to 160,588.80, 240,813.54 and 85,692.56 is: 128,501.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,588.80 : 240,813.54 = 85,692.56 : x
  2. Step 2: Convert to fraction form
    160,588.80/240,813.54 = 85,692.56/x
  3. Step 3: Cross multiply
    160,588.80x = 240,813.54 × 85,692.56
  4. Step 4: Simplify right side
    160,588.80x = 20,635,927,521.19
  5. Step 5: Solve for x
    x = 20,635,927,521.19/160,588.80
  6. Step 6: Final answer
    x = 128,501.66

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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.