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Finding the Fourth Proportional to 77,203.92, 116,324.82 and 69,816.72

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Solution

The fourth proportional to 77,203.92, 116,324.82 and 69,816.72 is: 105,194.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,203.92 : 116,324.82 = 69,816.72 : x
  2. Step 2: Convert to fraction form
    77,203.92/116,324.82 = 69,816.72/x
  3. Step 3: Cross multiply
    77,203.92x = 116,324.82 × 69,816.72
  4. Step 4: Simplify right side
    77,203.92x = 8,121,417,386.99
  5. Step 5: Solve for x
    x = 8,121,417,386.99/77,203.92
  6. Step 6: Final answer
    x = 105,194.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.