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Finding the Fourth Proportional to 189,605.90, 261,657.50 and 104,722.96

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Solution

The fourth proportional to 189,605.90, 261,657.50 and 104,722.96 is: 144,518.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,605.90 : 261,657.50 = 104,722.96 : x
  2. Step 2: Convert to fraction form
    189,605.90/261,657.50 = 104,722.96/x
  3. Step 3: Cross multiply
    189,605.90x = 261,657.50 × 104,722.96
  4. Step 4: Simplify right side
    189,605.90x = 27,401,547,709.66
  5. Step 5: Solve for x
    x = 27,401,547,709.66/189,605.90
  6. Step 6: Final answer
    x = 144,518.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.