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Finding the Fourth Proportional to 61,431.92, 84,803.66 and 46,330.68

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Solution

The fourth proportional to 61,431.92, 84,803.66 and 46,330.68 is: 63,957.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,431.92 : 84,803.66 = 46,330.68 : x
  2. Step 2: Convert to fraction form
    61,431.92/84,803.66 = 46,330.68/x
  3. Step 3: Cross multiply
    61,431.92x = 84,803.66 × 46,330.68
  4. Step 4: Simplify right side
    61,431.92x = 3,929,011,494.39
  5. Step 5: Solve for x
    x = 3,929,011,494.39/61,431.92
  6. Step 6: Final answer
    x = 63,957.17

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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.