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Finding the Fourth Proportional to 109,682.99, 151,363.53 and 64,361.72

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Solution

The fourth proportional to 109,682.99, 151,363.53 and 64,361.72 is: 88,819.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,682.99 : 151,363.53 = 64,361.72 : x
  2. Step 2: Convert to fraction form
    109,682.99/151,363.53 = 64,361.72/x
  3. Step 3: Cross multiply
    109,682.99x = 151,363.53 × 64,361.72
  4. Step 4: Simplify right side
    109,682.99x = 9,742,017,514.48
  5. Step 5: Solve for x
    x = 9,742,017,514.48/109,682.99
  6. Step 6: Final answer
    x = 88,819.77

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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.