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Finding the Fourth Proportional to 68,507.64, 94,532.94 and 38,699.64

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Solution

The fourth proportional to 68,507.64, 94,532.94 and 38,699.64 is: 53,401.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,507.64 : 94,532.94 = 38,699.64 : x
  2. Step 2: Convert to fraction form
    68,507.64/94,532.94 = 38,699.64/x
  3. Step 3: Cross multiply
    68,507.64x = 94,532.94 × 38,699.64
  4. Step 4: Simplify right side
    68,507.64x = 3,658,390,746.14
  5. Step 5: Solve for x
    x = 3,658,390,746.14/68,507.64
  6. Step 6: Final answer
    x = 53,401.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.