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Finding the Fourth Proportional to 469,718.70, 648,210.90 and 254,858.70

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Solution

The fourth proportional to 469,718.70, 648,210.90 and 254,858.70 is: 351,704.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,718.70 : 648,210.90 = 254,858.70 : x
  2. Step 2: Convert to fraction form
    469,718.70/648,210.90 = 254,858.70/x
  3. Step 3: Cross multiply
    469,718.70x = 648,210.90 × 254,858.70
  4. Step 4: Simplify right side
    469,718.70x = 165,202,190,686.34
  5. Step 5: Solve for x
    x = 165,202,190,686.34/469,718.70
  6. Step 6: Final answer
    x = 351,704.52

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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.