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Finding the Fourth Proportional to 275,398.87, 379,746.88 and 190,368.31

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Solution

The fourth proportional to 275,398.87, 379,746.88 and 190,368.31 is: 262,498.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,398.87 : 379,746.88 = 190,368.31 : x
  2. Step 2: Convert to fraction form
    275,398.87/379,746.88 = 190,368.31/x
  3. Step 3: Cross multiply
    275,398.87x = 379,746.88 × 190,368.31
  4. Step 4: Simplify right side
    275,398.87x = 72,291,771,773.37
  5. Step 5: Solve for x
    x = 72,291,771,773.37/275,398.87
  6. Step 6: Final answer
    x = 262,498.43

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1.5x scale

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.