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Finding the Fourth Proportional to 257,318.58, 355,100.48 and 142,599.11

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Solution

The fourth proportional to 257,318.58, 355,100.48 and 142,599.11 is: 196,787.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,318.58 : 355,100.48 = 142,599.11 : x
  2. Step 2: Convert to fraction form
    257,318.58/355,100.48 = 142,599.11/x
  3. Step 3: Cross multiply
    257,318.58x = 355,100.48 × 142,599.11
  4. Step 4: Simplify right side
    257,318.58x = 50,637,012,583.33
  5. Step 5: Solve for x
    x = 50,637,012,583.33/257,318.58
  6. Step 6: Final answer
    x = 196,787.24

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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.