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Finding the Fourth Proportional to 60,730.70, 91,113.90 and 31,169.18

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Solution

The fourth proportional to 60,730.70, 91,113.90 and 31,169.18 is: 46,762.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,730.70 : 91,113.90 = 31,169.18 : x
  2. Step 2: Convert to fraction form
    60,730.70/91,113.90 = 31,169.18/x
  3. Step 3: Cross multiply
    60,730.70x = 91,113.90 × 31,169.18
  4. Step 4: Simplify right side
    60,730.70x = 2,839,945,549.60
  5. Step 5: Solve for x
    x = 2,839,945,549.60/60,730.70
  6. Step 6: Final answer
    x = 46,762.93

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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.