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Finding the Fourth Proportional to 468,622.80, 702,415.80 and 258,411.60

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Solution

The fourth proportional to 468,622.80, 702,415.80 and 258,411.60 is: 387,331.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,622.80 : 702,415.80 = 258,411.60 : x
  2. Step 2: Convert to fraction form
    468,622.80/702,415.80 = 258,411.60/x
  3. Step 3: Cross multiply
    468,622.80x = 702,415.80 × 258,411.60
  4. Step 4: Simplify right side
    468,622.80x = 181,512,390,743.28
  5. Step 5: Solve for x
    x = 181,512,390,743.28/468,622.80
  6. Step 6: Final answer
    x = 387,331.54

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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.