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Finding the Fourth Proportional to 153,383.68, 211,636.83 and 89,709.04

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Solution

The fourth proportional to 153,383.68, 211,636.83 and 89,709.04 is: 123,779.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,383.68 : 211,636.83 = 89,709.04 : x
  2. Step 2: Convert to fraction form
    153,383.68/211,636.83 = 89,709.04/x
  3. Step 3: Cross multiply
    153,383.68x = 211,636.83 × 89,709.04
  4. Step 4: Simplify right side
    153,383.68x = 18,985,736,847.94
  5. Step 5: Solve for x
    x = 18,985,736,847.94/153,383.68
  6. Step 6: Final answer
    x = 123,779.38

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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.