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Finding the Fourth Proportional to 470,034.50, 648,021.20 and 373,560.48

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Solution

The fourth proportional to 470,034.50, 648,021.20 and 373,560.48 is: 515,015.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,034.50 : 648,021.20 = 373,560.48 : x
  2. Step 2: Convert to fraction form
    470,034.50/648,021.20 = 373,560.48/x
  3. Step 3: Cross multiply
    470,034.50x = 648,021.20 × 373,560.48
  4. Step 4: Simplify right side
    470,034.50x = 242,075,110,522.18
  5. Step 5: Solve for x
    x = 242,075,110,522.18/470,034.50
  6. Step 6: Final answer
    x = 515,015.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.