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Finding the Fourth Proportional to 64,955.58, 89,646.49 and 39,466.09

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Solution

The fourth proportional to 64,955.58, 89,646.49 and 39,466.09 is: 54,467.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,955.58 : 89,646.49 = 39,466.09 : x
  2. Step 2: Convert to fraction form
    64,955.58/89,646.49 = 39,466.09/x
  3. Step 3: Cross multiply
    64,955.58x = 89,646.49 × 39,466.09
  4. Step 4: Simplify right side
    64,955.58x = 3,537,996,745.05
  5. Step 5: Solve for x
    x = 3,537,996,745.05/64,955.58
  6. Step 6: Final answer
    x = 54,467.94

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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.