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Finding the Fourth Proportional to 693,709.36, 957,440.76 and 403,410.88

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Solution

The fourth proportional to 693,709.36, 957,440.76 and 403,410.88 is: 556,777.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,709.36 : 957,440.76 = 403,410.88 : x
  2. Step 2: Convert to fraction form
    693,709.36/957,440.76 = 403,410.88/x
  3. Step 3: Cross multiply
    693,709.36x = 957,440.76 × 403,410.88
  4. Step 4: Simplify right side
    693,709.36x = 386,242,019,539.47
  5. Step 5: Solve for x
    x = 386,242,019,539.47/693,709.36
  6. Step 6: Final answer
    x = 556,777.87

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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.