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Finding the Fourth Proportional to 644,087.82, 888,868.94 and 357,607.88

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Solution

The fourth proportional to 644,087.82, 888,868.94 and 357,607.88 is: 493,514.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,087.82 : 888,868.94 = 357,607.88 : x
  2. Step 2: Convert to fraction form
    644,087.82/888,868.94 = 357,607.88/x
  3. Step 3: Cross multiply
    644,087.82x = 888,868.94 × 357,607.88
  4. Step 4: Simplify right side
    644,087.82x = 317,866,537,231.25
  5. Step 5: Solve for x
    x = 317,866,537,231.25/644,087.82
  6. Step 6: Final answer
    x = 493,514.28

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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.