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Finding the Fourth Proportional to 128,227.34, 192,169.07 and 99,798.63

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Solution

The fourth proportional to 128,227.34, 192,169.07 and 99,798.63 is: 149,564.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,227.34 : 192,169.07 = 99,798.63 : x
  2. Step 2: Convert to fraction form
    128,227.34/192,169.07 = 99,798.63/x
  3. Step 3: Cross multiply
    128,227.34x = 192,169.07 × 99,798.63
  4. Step 4: Simplify right side
    128,227.34x = 19,178,209,068.99
  5. Step 5: Solve for x
    x = 19,178,209,068.99/128,227.34
  6. Step 6: Final answer
    x = 149,564.12

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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.