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Finding the Fourth Proportional to 58,497.87, 80,726.81 and 31,640.32

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Solution

The fourth proportional to 58,497.87, 80,726.81 and 31,640.32 is: 43,663.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,497.87 : 80,726.81 = 31,640.32 : x
  2. Step 2: Convert to fraction form
    58,497.87/80,726.81 = 31,640.32/x
  3. Step 3: Cross multiply
    58,497.87x = 80,726.81 × 31,640.32
  4. Step 4: Simplify right side
    58,497.87x = 2,554,222,100.98
  5. Step 5: Solve for x
    x = 2,554,222,100.98/58,497.87
  6. Step 6: Final answer
    x = 43,663.51

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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.