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Finding the Fourth Proportional to 64,911.58, 89,578.11 and 35,103.58

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Solution

The fourth proportional to 64,911.58, 89,578.11 and 35,103.58 is: 48,443.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,911.58 : 89,578.11 = 35,103.58 : x
  2. Step 2: Convert to fraction form
    64,911.58/89,578.11 = 35,103.58/x
  3. Step 3: Cross multiply
    64,911.58x = 89,578.11 × 35,103.58
  4. Step 4: Simplify right side
    64,911.58x = 3,144,512,350.63
  5. Step 5: Solve for x
    x = 3,144,512,350.63/64,911.58
  6. Step 6: Final answer
    x = 48,443.01

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1.5x scale

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.