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Finding the Fourth Proportional to 419,573.96, 579,053.87 and 256,221.45

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Solution

The fourth proportional to 419,573.96, 579,053.87 and 256,221.45 is: 353,611.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,573.96 : 579,053.87 = 256,221.45 : x
  2. Step 2: Convert to fraction form
    419,573.96/579,053.87 = 256,221.45/x
  3. Step 3: Cross multiply
    419,573.96x = 579,053.87 × 256,221.45
  4. Step 4: Simplify right side
    419,573.96x = 148,366,020,918.40
  5. Step 5: Solve for x
    x = 148,366,020,918.40/419,573.96
  6. Step 6: Final answer
    x = 353,611.13

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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.