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Finding the Fourth Proportional to 43,809.65, 65,719.95 and 17,152.21

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Solution

The fourth proportional to 43,809.65, 65,719.95 and 17,152.21 is: 25,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,809.65 : 65,719.95 = 17,152.21 : x
  2. Step 2: Convert to fraction form
    43,809.65/65,719.95 = 17,152.21/x
  3. Step 3: Cross multiply
    43,809.65x = 65,719.95 × 17,152.21
  4. Step 4: Simplify right side
    43,809.65x = 1,127,242,383.59
  5. Step 5: Solve for x
    x = 1,127,242,383.59/43,809.65
  6. Step 6: Final answer
    x = 25,730.46

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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.