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Finding the Fourth Proportional to 59,398.45, 89,078.64 and 31,302.79

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Solution

The fourth proportional to 59,398.45, 89,078.64 and 31,302.79 is: 46,944.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,398.45 : 89,078.64 = 31,302.79 : x
  2. Step 2: Convert to fraction form
    59,398.45/89,078.64 = 31,302.79/x
  3. Step 3: Cross multiply
    59,398.45x = 89,078.64 × 31,302.79
  4. Step 4: Simplify right side
    59,398.45x = 2,788,409,961.41
  5. Step 5: Solve for x
    x = 2,788,409,961.41/59,398.45
  6. Step 6: Final answer
    x = 46,944.15

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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.