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Finding the Fourth Proportional to 644,066.37, 888,770.48 and 357,586.38

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Solution

The fourth proportional to 644,066.37, 888,770.48 and 357,586.38 is: 493,446.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,066.37 : 888,770.48 = 357,586.38 : x
  2. Step 2: Convert to fraction form
    644,066.37/888,770.48 = 357,586.38/x
  3. Step 3: Cross multiply
    644,066.37x = 888,770.48 × 357,586.38
  4. Step 4: Simplify right side
    644,066.37x = 317,812,216,806.13
  5. Step 5: Solve for x
    x = 317,812,216,806.13/644,066.37
  6. Step 6: Final answer
    x = 493,446.38

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Half scale
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Double scale
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Similar ratio
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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.