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Finding the Fourth Proportional to 586,867.82, 879,773.60 and 212,628.38

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Solution

The fourth proportional to 586,867.82, 879,773.60 and 212,628.38 is: 318,751.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,867.82 : 879,773.60 = 212,628.38 : x
  2. Step 2: Convert to fraction form
    586,867.82/879,773.60 = 212,628.38/x
  3. Step 3: Cross multiply
    586,867.82x = 879,773.60 × 212,628.38
  4. Step 4: Simplify right side
    586,867.82x = 187,064,831,467.47
  5. Step 5: Solve for x
    x = 187,064,831,467.47/586,867.82
  6. Step 6: Final answer
    x = 318,751.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.