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Finding the Fourth Proportional to 191,409.57, 287,126.19 and 58,299.63

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Solution

The fourth proportional to 191,409.57, 287,126.19 and 58,299.63 is: 87,453.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,409.57 : 287,126.19 = 58,299.63 : x
  2. Step 2: Convert to fraction form
    191,409.57/287,126.19 = 58,299.63/x
  3. Step 3: Cross multiply
    191,409.57x = 287,126.19 × 58,299.63
  4. Step 4: Simplify right side
    191,409.57x = 16,739,350,640.31
  5. Step 5: Solve for x
    x = 16,739,350,640.31/191,409.57
  6. Step 6: Final answer
    x = 87,453.05

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1.5x scale

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.