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Finding the Fourth Proportional to 611,570.90, 917,028.30 and 256,183.40

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Solution

The fourth proportional to 611,570.90, 917,028.30 and 256,183.40 is: 384,137.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,570.90 : 917,028.30 = 256,183.40 : x
  2. Step 2: Convert to fraction form
    611,570.90/917,028.30 = 256,183.40/x
  3. Step 3: Cross multiply
    611,570.90x = 917,028.30 × 256,183.40
  4. Step 4: Simplify right side
    611,570.90x = 234,927,427,790.22
  5. Step 5: Solve for x
    x = 234,927,427,790.22/611,570.90
  6. Step 6: Final answer
    x = 384,137.68

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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.