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Finding the Fourth Proportional to 373,816.60, 515,848.89 and 212,656.48

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Solution

The fourth proportional to 373,816.60, 515,848.89 and 212,656.48 is: 293,455.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,816.60 : 515,848.89 = 212,656.48 : x
  2. Step 2: Convert to fraction form
    373,816.60/515,848.89 = 212,656.48/x
  3. Step 3: Cross multiply
    373,816.60x = 515,848.89 × 212,656.48
  4. Step 4: Simplify right side
    373,816.60x = 109,698,609,159.31
  5. Step 5: Solve for x
    x = 109,698,609,159.31/373,816.60
  6. Step 6: Final answer
    x = 293,455.69

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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.