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Finding the Fourth Proportional to 191,544.54, 264,343.40 and 105,503.50

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Solution

The fourth proportional to 191,544.54, 264,343.40 and 105,503.50 is: 145,601.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,544.54 : 264,343.40 = 105,503.50 : x
  2. Step 2: Convert to fraction form
    191,544.54/264,343.40 = 105,503.50/x
  3. Step 3: Cross multiply
    191,544.54x = 264,343.40 × 105,503.50
  4. Step 4: Simplify right side
    191,544.54x = 27,889,154,100.45
  5. Step 5: Solve for x
    x = 27,889,154,100.45/191,544.54
  6. Step 6: Final answer
    x = 145,601.41

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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.