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Finding the Fourth Proportional to 402,670.44, 604,007.28 and 122,190.12

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Solution

The fourth proportional to 402,670.44, 604,007.28 and 122,190.12 is: 183,285.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,670.44 : 604,007.28 = 122,190.12 : x
  2. Step 2: Convert to fraction form
    402,670.44/604,007.28 = 122,190.12/x
  3. Step 3: Cross multiply
    402,670.44x = 604,007.28 × 122,190.12
  4. Step 4: Simplify right side
    402,670.44x = 73,803,722,024.07
  5. Step 5: Solve for x
    x = 73,803,722,024.07/402,670.44
  6. Step 6: Final answer
    x = 183,285.67

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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.