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Finding the Fourth Proportional to 64,813.62, 89,450.01 and 40,939.14

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Solution

The fourth proportional to 64,813.62, 89,450.01 and 40,939.14 is: 56,500.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,813.62 : 89,450.01 = 40,939.14 : x
  2. Step 2: Convert to fraction form
    64,813.62/89,450.01 = 40,939.14/x
  3. Step 3: Cross multiply
    64,813.62x = 89,450.01 × 40,939.14
  4. Step 4: Simplify right side
    64,813.62x = 3,662,006,482.39
  5. Step 5: Solve for x
    x = 3,662,006,482.39/64,813.62
  6. Step 6: Final answer
    x = 56,500.57

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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.