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Finding the Fourth Proportional to 128,501.84, 192,715.76 and 44,258.60

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Solution

The fourth proportional to 128,501.84, 192,715.76 and 44,258.60 is: 66,375.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,501.84 : 192,715.76 = 44,258.60 : x
  2. Step 2: Convert to fraction form
    128,501.84/192,715.76 = 44,258.60/x
  3. Step 3: Cross multiply
    128,501.84x = 192,715.76 × 44,258.60
  4. Step 4: Simplify right side
    128,501.84x = 8,529,329,735.54
  5. Step 5: Solve for x
    x = 8,529,329,735.54/128,501.84
  6. Step 6: Final answer
    x = 66,375.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.