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Finding the Fourth Proportional to 191,738.40, 287,607.60 and 49,583.40

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Solution

The fourth proportional to 191,738.40, 287,607.60 and 49,583.40 is: 74,375.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,738.40 : 287,607.60 = 49,583.40 : x
  2. Step 2: Convert to fraction form
    191,738.40/287,607.60 = 49,583.40/x
  3. Step 3: Cross multiply
    191,738.40x = 287,607.60 × 49,583.40
  4. Step 4: Simplify right side
    191,738.40x = 14,260,562,673.84
  5. Step 5: Solve for x
    x = 14,260,562,673.84/191,738.40
  6. Step 6: Final answer
    x = 74,375.10

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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.