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Finding the Fourth Proportional to 64,911.68, 89,577.92 and 35,103.68

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Solution

The fourth proportional to 64,911.68, 89,577.92 and 35,103.68 is: 48,442.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,911.68 : 89,577.92 = 35,103.68 : x
  2. Step 2: Convert to fraction form
    64,911.68/89,577.92 = 35,103.68/x
  3. Step 3: Cross multiply
    64,911.68x = 89,577.92 × 35,103.68
  4. Step 4: Simplify right side
    64,911.68x = 3,144,514,638.75
  5. Step 5: Solve for x
    x = 3,144,514,638.75/64,911.68
  6. Step 6: Final answer
    x = 48,442.97

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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.