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Finding the Fourth Proportional to 64,855.84, 89,501.06 and 36,561.53

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Solution

The fourth proportional to 64,855.84, 89,501.06 and 36,561.53 is: 50,454.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,855.84 : 89,501.06 = 36,561.53 : x
  2. Step 2: Convert to fraction form
    64,855.84/89,501.06 = 36,561.53/x
  3. Step 3: Cross multiply
    64,855.84x = 89,501.06 × 36,561.53
  4. Step 4: Simplify right side
    64,855.84x = 3,272,295,690.22
  5. Step 5: Solve for x
    x = 3,272,295,690.22/64,855.84
  6. Step 6: Final answer
    x = 50,454.91

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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.