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Finding the Fourth Proportional to 109,340.34, 150,889.01 and 61,609.07

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Solution

The fourth proportional to 109,340.34, 150,889.01 and 61,609.07 is: 85,020.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,340.34 : 150,889.01 = 61,609.07 : x
  2. Step 2: Convert to fraction form
    109,340.34/150,889.01 = 61,609.07/x
  3. Step 3: Cross multiply
    109,340.34x = 150,889.01 × 61,609.07
  4. Step 4: Simplify right side
    109,340.34x = 9,296,130,516.83
  5. Step 5: Solve for x
    x = 9,296,130,516.83/109,340.34
  6. Step 6: Final answer
    x = 85,020.14

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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.