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Finding the Fourth Proportional to 1,147,573.68, 1,583,629.62 and 631,297.40

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Solution

The fourth proportional to 1,147,573.68, 1,583,629.62 and 631,297.40 is: 871,178.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,573.68 : 1,583,629.62 = 631,297.40 : x
  2. Step 2: Convert to fraction form
    1,147,573.68/1,583,629.62 = 631,297.40/x
  3. Step 3: Cross multiply
    1,147,573.68x = 1,583,629.62 × 631,297.40
  4. Step 4: Simplify right side
    1,147,573.68x = 999,741,253,750.84
  5. Step 5: Solve for x
    x = 999,741,253,750.84/1,147,573.68
  6. Step 6: Final answer
    x = 871,178.27

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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.