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Finding the Fourth Proportional to 118,443.52, 163,450.68 and 64,728.36

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Solution

The fourth proportional to 118,443.52, 163,450.68 and 64,728.36 is: 89,324.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,443.52 : 163,450.68 = 64,728.36 : x
  2. Step 2: Convert to fraction form
    118,443.52/163,450.68 = 64,728.36/x
  3. Step 3: Cross multiply
    118,443.52x = 163,450.68 × 64,728.36
  4. Step 4: Simplify right side
    118,443.52x = 10,579,894,457.28
  5. Step 5: Solve for x
    x = 10,579,894,457.28/118,443.52
  6. Step 6: Final answer
    x = 89,324.38

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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.