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Finding the Fourth Proportional to 104,853.40, 157,020.90 and 69,602.20

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Solution

The fourth proportional to 104,853.40, 157,020.90 and 69,602.20 is: 104,231.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,853.40 : 157,020.90 = 69,602.20 : x
  2. Step 2: Convert to fraction form
    104,853.40/157,020.90 = 69,602.20/x
  3. Step 3: Cross multiply
    104,853.40x = 157,020.90 × 69,602.20
  4. Step 4: Simplify right side
    104,853.40x = 10,929,000,085.98
  5. Step 5: Solve for x
    x = 10,929,000,085.98/104,853.40
  6. Step 6: Final answer
    x = 104,231.24

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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.