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Finding the Fourth Proportional to 191,513.80, 287,270.70 and 177,079.60

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Solution

The fourth proportional to 191,513.80, 287,270.70 and 177,079.60 is: 265,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,513.80 : 287,270.70 = 177,079.60 : x
  2. Step 2: Convert to fraction form
    191,513.80/287,270.70 = 177,079.60/x
  3. Step 3: Cross multiply
    191,513.80x = 287,270.70 × 177,079.60
  4. Step 4: Simplify right side
    191,513.80x = 50,869,780,647.72
  5. Step 5: Solve for x
    x = 50,869,780,647.72/191,513.80
  6. Step 6: Final answer
    x = 265,619.40

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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.