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Finding the Fourth Proportional to 356,038.40, 534,403.20 and 178,745.60

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Solution

The fourth proportional to 356,038.40, 534,403.20 and 178,745.60 is: 268,291.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,038.40 : 534,403.20 = 178,745.60 : x
  2. Step 2: Convert to fraction form
    356,038.40/534,403.20 = 178,745.60/x
  3. Step 3: Cross multiply
    356,038.40x = 534,403.20 × 178,745.60
  4. Step 4: Simplify right side
    356,038.40x = 95,522,220,625.92
  5. Step 5: Solve for x
    x = 95,522,220,625.92/356,038.40
  6. Step 6: Final answer
    x = 268,291.91

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1.5x scale

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.