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Finding the Fourth Proportional to 58,847.95, 81,210.70 and 31,990.51

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Solution

The fourth proportional to 58,847.95, 81,210.70 and 31,990.51 is: 44,147.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,847.95 : 81,210.70 = 31,990.51 : x
  2. Step 2: Convert to fraction form
    58,847.95/81,210.70 = 31,990.51/x
  3. Step 3: Cross multiply
    58,847.95x = 81,210.70 × 31,990.51
  4. Step 4: Simplify right side
    58,847.95x = 2,597,971,851.96
  5. Step 5: Solve for x
    x = 2,597,971,851.96/58,847.95
  6. Step 6: Final answer
    x = 44,147.19

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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.