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Finding the Fourth Proportional to 43,647.84, 65,477.76 and 14,055.84

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Solution

The fourth proportional to 43,647.84, 65,477.76 and 14,055.84 is: 21,085.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,647.84 : 65,477.76 = 14,055.84 : x
  2. Step 2: Convert to fraction form
    43,647.84/65,477.76 = 14,055.84/x
  3. Step 3: Cross multiply
    43,647.84x = 65,477.76 × 14,055.84
  4. Step 4: Simplify right side
    43,647.84x = 920,344,918.12
  5. Step 5: Solve for x
    x = 920,344,918.12/43,647.84
  6. Step 6: Final answer
    x = 21,085.69

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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.