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Finding the Fourth Proportional to 125,649.96, 188,008.26 and 70,284.84

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Solution

The fourth proportional to 125,649.96, 188,008.26 and 70,284.84 is: 105,166.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,649.96 : 188,008.26 = 70,284.84 : x
  2. Step 2: Convert to fraction form
    125,649.96/188,008.26 = 70,284.84/x
  3. Step 3: Cross multiply
    125,649.96x = 188,008.26 × 70,284.84
  4. Step 4: Simplify right side
    125,649.96x = 13,214,130,472.78
  5. Step 5: Solve for x
    x = 13,214,130,472.78/125,649.96
  6. Step 6: Final answer
    x = 105,166.21

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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.