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Finding the Fourth Proportional to 405,330.60, 607,121.10 and 335,346.60

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Solution

The fourth proportional to 405,330.60, 607,121.10 and 335,346.60 is: 502,296.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,330.60 : 607,121.10 = 335,346.60 : x
  2. Step 2: Convert to fraction form
    405,330.60/607,121.10 = 335,346.60/x
  3. Step 3: Cross multiply
    405,330.60x = 607,121.10 × 335,346.60
  4. Step 4: Simplify right side
    405,330.60x = 203,595,996,673.26
  5. Step 5: Solve for x
    x = 203,595,996,673.26/405,330.60
  6. Step 6: Final answer
    x = 502,296.14

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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.