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Finding the Fourth Proportional to 64,128.99, 96,188.92 and 19,751.12

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Solution

The fourth proportional to 64,128.99, 96,188.92 and 19,751.12 is: 29,625.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,128.99 : 96,188.92 = 19,751.12 : x
  2. Step 2: Convert to fraction form
    64,128.99/96,188.92 = 19,751.12/x
  3. Step 3: Cross multiply
    64,128.99x = 96,188.92 × 19,751.12
  4. Step 4: Simplify right side
    64,128.99x = 1,899,838,901.59
  5. Step 5: Solve for x
    x = 1,899,838,901.59/64,128.99
  6. Step 6: Final answer
    x = 29,625.27

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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.