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Finding the Fourth Proportional to 444,064.80, 666,788.40 and 257,440.80

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Solution

The fourth proportional to 444,064.80, 666,788.40 and 257,440.80 is: 386,561.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,064.80 : 666,788.40 = 257,440.80 : x
  2. Step 2: Convert to fraction form
    444,064.80/666,788.40 = 257,440.80/x
  3. Step 3: Cross multiply
    444,064.80x = 666,788.40 × 257,440.80
  4. Step 4: Simplify right side
    444,064.80x = 171,658,539,126.72
  5. Step 5: Solve for x
    x = 171,658,539,126.72/444,064.80
  6. Step 6: Final answer
    x = 386,561.91

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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.