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Finding the Fourth Proportional to 693,800.36, 957,739.68 and 421,955.52

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Solution

The fourth proportional to 693,800.36, 957,739.68 and 421,955.52 is: 582,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,800.36 : 957,739.68 = 421,955.52 : x
  2. Step 2: Convert to fraction form
    693,800.36/957,739.68 = 421,955.52/x
  3. Step 3: Cross multiply
    693,800.36x = 957,739.68 × 421,955.52
  4. Step 4: Simplify right side
    693,800.36x = 404,123,544,699.03
  5. Step 5: Solve for x
    x = 404,123,544,699.03/693,800.36
  6. Step 6: Final answer
    x = 582,478.14

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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.