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Finding the Fourth Proportional to 190,373.06, 285,485.78 and 101,578.12

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Solution

The fourth proportional to 190,373.06, 285,485.78 and 101,578.12 is: 152,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,373.06 : 285,485.78 = 101,578.12 : x
  2. Step 2: Convert to fraction form
    190,373.06/285,485.78 = 101,578.12/x
  3. Step 3: Cross multiply
    190,373.06x = 285,485.78 × 101,578.12
  4. Step 4: Simplify right side
    190,373.06x = 28,999,108,819.13
  5. Step 5: Solve for x
    x = 28,999,108,819.13/190,373.06
  6. Step 6: Final answer
    x = 152,327.80

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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.