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Finding the Fourth Proportional to 354,554.40, 489,267.09 and 193,408.14

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Solution

The fourth proportional to 354,554.40, 489,267.09 and 193,408.14 is: 266,893.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,554.40 : 489,267.09 = 193,408.14 : x
  2. Step 2: Convert to fraction form
    354,554.40/489,267.09 = 193,408.14/x
  3. Step 3: Cross multiply
    354,554.40x = 489,267.09 × 193,408.14
  4. Step 4: Simplify right side
    354,554.40x = 94,628,237,840.11
  5. Step 5: Solve for x
    x = 94,628,237,840.11/354,554.40
  6. Step 6: Final answer
    x = 266,893.42

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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.