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Finding the Fourth Proportional to 64,794.39, 89,415.86 and 36,509.19

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Solution

The fourth proportional to 64,794.39, 89,415.86 and 36,509.19 is: 50,382.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,794.39 : 89,415.86 = 36,509.19 : x
  2. Step 2: Convert to fraction form
    64,794.39/89,415.86 = 36,509.19/x
  3. Step 3: Cross multiply
    64,794.39x = 89,415.86 × 36,509.19
  4. Step 4: Simplify right side
    64,794.39x = 3,264,500,621.75
  5. Step 5: Solve for x
    x = 3,264,500,621.75/64,794.39
  6. Step 6: Final answer
    x = 50,382.46

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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.