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Finding the Fourth Proportional to 631,490.40, 949,568.40 and 528,847.20

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Solution

The fourth proportional to 631,490.40, 949,568.40 and 528,847.20 is: 795,224.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,490.40 : 949,568.40 = 528,847.20 : x
  2. Step 2: Convert to fraction form
    631,490.40/949,568.40 = 528,847.20/x
  3. Step 3: Cross multiply
    631,490.40x = 949,568.40 × 528,847.20
  4. Step 4: Simplify right side
    631,490.40x = 502,176,589,548.48
  5. Step 5: Solve for x
    x = 502,176,589,548.48/631,490.40
  6. Step 6: Final answer
    x = 795,224.42

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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.