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Finding the Fourth Proportional to 504,858.56, 696,681.36 and 289,847.28

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Solution

The fourth proportional to 504,858.56, 696,681.36 and 289,847.28 is: 399,975.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,858.56 : 696,681.36 = 289,847.28 : x
  2. Step 2: Convert to fraction form
    504,858.56/696,681.36 = 289,847.28/x
  3. Step 3: Cross multiply
    504,858.56x = 696,681.36 × 289,847.28
  4. Step 4: Simplify right side
    504,858.56x = 201,931,197,222.70
  5. Step 5: Solve for x
    x = 201,931,197,222.70/504,858.56
  6. Step 6: Final answer
    x = 399,975.78

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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.