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Finding the Fourth Proportional to 611,152.90, 917,057.40 and 256,202.80

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Solution

The fourth proportional to 611,152.90, 917,057.40 and 256,202.80 is: 384,441.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,152.90 : 917,057.40 = 256,202.80 : x
  2. Step 2: Convert to fraction form
    611,152.90/917,057.40 = 256,202.80/x
  3. Step 3: Cross multiply
    611,152.90x = 917,057.40 × 256,202.80
  4. Step 4: Simplify right side
    611,152.90x = 234,952,673,640.72
  5. Step 5: Solve for x
    x = 234,952,673,640.72/611,152.90
  6. Step 6: Final answer
    x = 384,441.72

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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.