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Finding the Fourth Proportional to 256,585.98, 354,082.53 and 143,419.26

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Solution

The fourth proportional to 256,585.98, 354,082.53 and 143,419.26 is: 197,915.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,585.98 : 354,082.53 = 143,419.26 : x
  2. Step 2: Convert to fraction form
    256,585.98/354,082.53 = 143,419.26/x
  3. Step 3: Cross multiply
    256,585.98x = 354,082.53 × 143,419.26
  4. Step 4: Simplify right side
    256,585.98x = 50,782,254,431.53
  5. Step 5: Solve for x
    x = 50,782,254,431.53/256,585.98
  6. Step 6: Final answer
    x = 197,915.16

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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.