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Finding the Fourth Proportional to 64,855.74, 89,501.04 and 36,561.36

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Solution

The fourth proportional to 64,855.74, 89,501.04 and 36,561.36 is: 50,454.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,855.74 : 89,501.04 = 36,561.36 : x
  2. Step 2: Convert to fraction form
    64,855.74/89,501.04 = 36,561.36/x
  3. Step 3: Cross multiply
    64,855.74x = 89,501.04 × 36,561.36
  4. Step 4: Simplify right side
    64,855.74x = 3,272,279,743.81
  5. Step 5: Solve for x
    x = 3,272,279,743.81/64,855.74
  6. Step 6: Final answer
    x = 50,454.74

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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.