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Finding the Fourth Proportional to 43,918.64, 65,887.14 and 14,338.16

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Solution

The fourth proportional to 43,918.64, 65,887.14 and 14,338.16 is: 21,510.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,918.64 : 65,887.14 = 14,338.16 : x
  2. Step 2: Convert to fraction form
    43,918.64/65,887.14 = 14,338.16/x
  3. Step 3: Cross multiply
    43,918.64x = 65,887.14 × 14,338.16
  4. Step 4: Simplify right side
    43,918.64x = 944,700,355.26
  5. Step 5: Solve for x
    x = 944,700,355.26/43,918.64
  6. Step 6: Final answer
    x = 21,510.24

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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.