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Finding the Fourth Proportional to 368,648.79, 552,087.45 and 210,397.47

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Solution

The fourth proportional to 368,648.79, 552,087.45 and 210,397.47 is: 315,090.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,648.79 : 552,087.45 = 210,397.47 : x
  2. Step 2: Convert to fraction form
    368,648.79/552,087.45 = 210,397.47/x
  3. Step 3: Cross multiply
    368,648.79x = 552,087.45 × 210,397.47
  4. Step 4: Simplify right side
    368,648.79x = 116,157,802,698.75
  5. Step 5: Solve for x
    x = 116,157,802,698.75/368,648.79
  6. Step 6: Final answer
    x = 315,090.69

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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.