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Finding the Fourth Proportional to 455,064.32, 627,984.44 and 251,116.98

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Solution

The fourth proportional to 455,064.32, 627,984.44 and 251,116.98 is: 346,539.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,064.32 : 627,984.44 = 251,116.98 : x
  2. Step 2: Convert to fraction form
    455,064.32/627,984.44 = 251,116.98/x
  3. Step 3: Cross multiply
    455,064.32x = 627,984.44 × 251,116.98
  4. Step 4: Simplify right side
    455,064.32x = 157,697,556,059.79
  5. Step 5: Solve for x
    x = 157,697,556,059.79/455,064.32
  6. Step 6: Final answer
    x = 346,539.05

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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.