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Finding the Fourth Proportional to 191,161.58, 263,809.60 and 105,124.07

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Solution

The fourth proportional to 191,161.58, 263,809.60 and 105,124.07 is: 145,074.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,161.58 : 263,809.60 = 105,124.07 : x
  2. Step 2: Convert to fraction form
    191,161.58/263,809.60 = 105,124.07/x
  3. Step 3: Cross multiply
    191,161.58x = 263,809.60 × 105,124.07
  4. Step 4: Simplify right side
    191,161.58x = 27,732,739,253.79
  5. Step 5: Solve for x
    x = 27,732,739,253.79/191,161.58
  6. Step 6: Final answer
    x = 145,074.86

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1.5x scale

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.