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Finding the Fourth Proportional to 43,970.42, 65,963.74 and 14,389.92

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Solution

The fourth proportional to 43,970.42, 65,963.74 and 14,389.92 is: 21,587.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,970.42 : 65,963.74 = 14,389.92 : x
  2. Step 2: Convert to fraction form
    43,970.42/65,963.74 = 14,389.92/x
  3. Step 3: Cross multiply
    43,970.42x = 65,963.74 × 14,389.92
  4. Step 4: Simplify right side
    43,970.42x = 949,212,941.50
  5. Step 5: Solve for x
    x = 949,212,941.50/43,970.42
  6. Step 6: Final answer
    x = 21,587.53

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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.