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Finding the Fourth Proportional to 64,627.08, 89,157.96 and 39,462

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Solution

The fourth proportional to 64,627.08, 89,157.96 and 39,462 is: 54,440.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,627.08 : 89,157.96 = 39,462 : x
  2. Step 2: Convert to fraction form
    64,627.08/89,157.96 = 39,462/x
  3. Step 3: Cross multiply
    64,627.08x = 89,157.96 × 39,462
  4. Step 4: Simplify right side
    64,627.08x = 3,518,351,417.52
  5. Step 5: Solve for x
    x = 3,518,351,417.52/64,627.08
  6. Step 6: Final answer
    x = 54,440.82

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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.