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Finding the Fourth Proportional to 101,889.16, 152,634.91 and 66,722.20

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Solution

The fourth proportional to 101,889.16, 152,634.91 and 66,722.20 is: 99,953.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,889.16 : 152,634.91 = 66,722.20 : x
  2. Step 2: Convert to fraction form
    101,889.16/152,634.91 = 66,722.20/x
  3. Step 3: Cross multiply
    101,889.16x = 152,634.91 × 66,722.20
  4. Step 4: Simplify right side
    101,889.16x = 10,184,136,992.00
  5. Step 5: Solve for x
    x = 10,184,136,992.00/101,889.16
  6. Step 6: Final answer
    x = 99,953.10

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1.5x scale

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.