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Finding the Fourth Proportional to 256,615, 354,113.28 and 141,886.74

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Solution

The fourth proportional to 256,615, 354,113.28 and 141,886.74 is: 195,795.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,615 : 354,113.28 = 141,886.74 : x
  2. Step 2: Convert to fraction form
    256,615/354,113.28 = 141,886.74/x
  3. Step 3: Cross multiply
    256,615x = 354,113.28 × 141,886.74
  4. Step 4: Simplify right side
    256,615x = 50,243,978,889.91
  5. Step 5: Solve for x
    x = 50,243,978,889.91/256,615
  6. Step 6: Final answer
    x = 195,795.18

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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.