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Finding the Fourth Proportional to 257,198.01, 355,026.42 and 209,368.32

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Solution

The fourth proportional to 257,198.01, 355,026.42 and 209,368.32 is: 289,004.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,198.01 : 355,026.42 = 209,368.32 : x
  2. Step 2: Convert to fraction form
    257,198.01/355,026.42 = 209,368.32/x
  3. Step 3: Cross multiply
    257,198.01x = 355,026.42 × 209,368.32
  4. Step 4: Simplify right side
    257,198.01x = 74,331,285,111.01
  5. Step 5: Solve for x
    x = 74,331,285,111.01/257,198.01
  6. Step 6: Final answer
    x = 289,004.12

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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.