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Finding the Fourth Proportional to 103,672.86, 143,068.80 and 58,351.51

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Solution

The fourth proportional to 103,672.86, 143,068.80 and 58,351.51 is: 80,525.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,672.86 : 143,068.80 = 58,351.51 : x
  2. Step 2: Convert to fraction form
    103,672.86/143,068.80 = 58,351.51/x
  3. Step 3: Cross multiply
    103,672.86x = 143,068.80 × 58,351.51
  4. Step 4: Simplify right side
    103,672.86x = 8,348,280,513.89
  5. Step 5: Solve for x
    x = 8,348,280,513.89/103,672.86
  6. Step 6: Final answer
    x = 80,525.23

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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.