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Finding the Fourth Proportional to 191,940.61, 264,877.30 and 105,904.95

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Solution

The fourth proportional to 191,940.61, 264,877.30 and 105,904.95 is: 146,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,940.61 : 264,877.30 = 105,904.95 : x
  2. Step 2: Convert to fraction form
    191,940.61/264,877.30 = 105,904.95/x
  3. Step 3: Cross multiply
    191,940.61x = 264,877.30 × 105,904.95
  4. Step 4: Simplify right side
    191,940.61x = 28,051,815,923.60
  5. Step 5: Solve for x
    x = 28,051,815,923.60/191,940.61
  6. Step 6: Final answer
    x = 146,148.42

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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.