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Finding the Fourth Proportional to 122,045.70, 182,712.15 and 87,053.70

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Solution

The fourth proportional to 122,045.70, 182,712.15 and 87,053.70 is: 130,326.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,045.70 : 182,712.15 = 87,053.70 : x
  2. Step 2: Convert to fraction form
    122,045.70/182,712.15 = 87,053.70/x
  3. Step 3: Cross multiply
    122,045.70x = 182,712.15 × 87,053.70
  4. Step 4: Simplify right side
    122,045.70x = 15,905,768,692.46
  5. Step 5: Solve for x
    x = 15,905,768,692.46/122,045.70
  6. Step 6: Final answer
    x = 130,326.33

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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.