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Finding the Fourth Proportional to 605,152.40, 907,728.60 and 405,568.40

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Solution

The fourth proportional to 605,152.40, 907,728.60 and 405,568.40 is: 608,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,152.40 : 907,728.60 = 405,568.40 : x
  2. Step 2: Convert to fraction form
    605,152.40/907,728.60 = 405,568.40/x
  3. Step 3: Cross multiply
    605,152.40x = 907,728.60 × 405,568.40
  4. Step 4: Simplify right side
    605,152.40x = 368,146,035,936.24
  5. Step 5: Solve for x
    x = 368,146,035,936.24/605,152.40
  6. Step 6: Final answer
    x = 608,352.60

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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.