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Finding the Fourth Proportional to 172,935.40, 259,403.10 and 48,276.40

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Solution

The fourth proportional to 172,935.40, 259,403.10 and 48,276.40 is: 72,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,935.40 : 259,403.10 = 48,276.40 : x
  2. Step 2: Convert to fraction form
    172,935.40/259,403.10 = 48,276.40/x
  3. Step 3: Cross multiply
    172,935.40x = 259,403.10 × 48,276.40
  4. Step 4: Simplify right side
    172,935.40x = 12,523,047,816.84
  5. Step 5: Solve for x
    x = 12,523,047,816.84/172,935.40
  6. Step 6: Final answer
    x = 72,414.60

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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.