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Finding the Fourth Proportional to 64,588.48, 89,100.48 and 39,394.24

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Solution

The fourth proportional to 64,588.48, 89,100.48 and 39,394.24 is: 54,344.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,588.48 : 89,100.48 = 39,394.24 : x
  2. Step 2: Convert to fraction form
    64,588.48/89,100.48 = 39,394.24/x
  3. Step 3: Cross multiply
    64,588.48x = 89,100.48 × 39,394.24
  4. Step 4: Simplify right side
    64,588.48x = 3,510,045,693.24
  5. Step 5: Solve for x
    x = 3,510,045,693.24/64,588.48
  6. Step 6: Final answer
    x = 54,344.76

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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.