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Finding the Fourth Proportional to 64,511.56, 89,035.14 and 36,219.16

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Solution

The fourth proportional to 64,511.56, 89,035.14 and 36,219.16 is: 49,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,511.56 : 89,035.14 = 36,219.16 : x
  2. Step 2: Convert to fraction form
    64,511.56/89,035.14 = 36,219.16/x
  3. Step 3: Cross multiply
    64,511.56x = 89,035.14 × 36,219.16
  4. Step 4: Simplify right side
    64,511.56x = 3,224,777,981.28
  5. Step 5: Solve for x
    x = 3,224,777,981.28/64,511.56
  6. Step 6: Final answer
    x = 49,987.60

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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.