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Finding the Fourth Proportional to 64,585.48, 89,096.34 and 39,391.24

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Solution

The fourth proportional to 64,585.48, 89,096.34 and 39,391.24 is: 54,340.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,585.48 : 89,096.34 = 39,391.24 : x
  2. Step 2: Convert to fraction form
    64,585.48/89,096.34 = 39,391.24/x
  3. Step 3: Cross multiply
    64,585.48x = 89,096.34 × 39,391.24
  4. Step 4: Simplify right side
    64,585.48x = 3,509,615,312.06
  5. Step 5: Solve for x
    x = 3,509,615,312.06/64,585.48
  6. Step 6: Final answer
    x = 54,340.62

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Half scale
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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.