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Finding the Fourth Proportional to 191,940.74, 264,877.48 and 105,905.08

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Solution

The fourth proportional to 191,940.74, 264,877.48 and 105,905.08 is: 146,148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,940.74 : 264,877.48 = 105,905.08 : x
  2. Step 2: Convert to fraction form
    191,940.74/264,877.48 = 105,905.08/x
  3. Step 3: Cross multiply
    191,940.74x = 264,877.48 × 105,905.08
  4. Step 4: Simplify right side
    191,940.74x = 28,051,870,643.41
  5. Step 5: Solve for x
    x = 28,051,870,643.41/191,940.74
  6. Step 6: Final answer
    x = 146,148.60

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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.