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Finding the Fourth Proportional to 405,805.02, 608,795.01 and 121,518.11

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Solution

The fourth proportional to 405,805.02, 608,795.01 and 121,518.11 is: 182,303.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,805.02 : 608,795.01 = 121,518.11 : x
  2. Step 2: Convert to fraction form
    405,805.02/608,795.01 = 121,518.11/x
  3. Step 3: Cross multiply
    405,805.02x = 608,795.01 × 121,518.11
  4. Step 4: Simplify right side
    405,805.02x = 73,979,615,948.66
  5. Step 5: Solve for x
    x = 73,979,615,948.66/405,805.02
  6. Step 6: Final answer
    x = 182,303.35

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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.