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Finding the Fourth Proportional to 192,840.48, 289,260.72 and 66,516.93

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Solution

The fourth proportional to 192,840.48, 289,260.72 and 66,516.93 is: 99,775.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,840.48 : 289,260.72 = 66,516.93 : x
  2. Step 2: Convert to fraction form
    192,840.48/289,260.72 = 66,516.93/x
  3. Step 3: Cross multiply
    192,840.48x = 289,260.72 × 66,516.93
  4. Step 4: Simplify right side
    192,840.48x = 19,240,735,063.99
  5. Step 5: Solve for x
    x = 19,240,735,063.99/192,840.48
  6. Step 6: Final answer
    x = 99,775.40

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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.