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Finding the Fourth Proportional to 60,579.70, 90,888.15 and 31,018.29

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Solution

The fourth proportional to 60,579.70, 90,888.15 and 31,018.29 is: 46,536.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,579.70 : 90,888.15 = 31,018.29 : x
  2. Step 2: Convert to fraction form
    60,579.70/90,888.15 = 31,018.29/x
  3. Step 3: Cross multiply
    60,579.70x = 90,888.15 × 31,018.29
  4. Step 4: Simplify right side
    60,579.70x = 2,819,194,994.26
  5. Step 5: Solve for x
    x = 2,819,194,994.26/60,579.70
  6. Step 6: Final answer
    x = 46,536.96

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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.