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Finding the Fourth Proportional to 117,469.48, 162,034.15 and 69,689

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Solution

The fourth proportional to 117,469.48, 162,034.15 and 69,689 is: 96,127.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,469.48 : 162,034.15 = 69,689 : x
  2. Step 2: Convert to fraction form
    117,469.48/162,034.15 = 69,689/x
  3. Step 3: Cross multiply
    117,469.48x = 162,034.15 × 69,689
  4. Step 4: Simplify right side
    117,469.48x = 11,291,997,879.35
  5. Step 5: Solve for x
    x = 11,291,997,879.35/117,469.48
  6. Step 6: Final answer
    x = 96,127.08

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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.