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Finding the Fourth Proportional to 124,580.51, 171,861.32 and 81,541.06

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Solution

The fourth proportional to 124,580.51, 171,861.32 and 81,541.06 is: 112,487.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,580.51 : 171,861.32 = 81,541.06 : x
  2. Step 2: Convert to fraction form
    124,580.51/171,861.32 = 81,541.06/x
  3. Step 3: Cross multiply
    124,580.51x = 171,861.32 × 81,541.06
  4. Step 4: Simplify right side
    124,580.51x = 14,013,754,205.80
  5. Step 5: Solve for x
    x = 14,013,754,205.80/124,580.51
  6. Step 6: Final answer
    x = 112,487.53

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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.