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Finding the Fourth Proportional to 374,118.72, 516,276.36 and 212,970.36

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Solution

The fourth proportional to 374,118.72, 516,276.36 and 212,970.36 is: 293,894.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,118.72 : 516,276.36 = 212,970.36 : x
  2. Step 2: Convert to fraction form
    374,118.72/516,276.36 = 212,970.36/x
  3. Step 3: Cross multiply
    374,118.72x = 516,276.36 × 212,970.36
  4. Step 4: Simplify right side
    374,118.72x = 109,951,562,248.69
  5. Step 5: Solve for x
    x = 109,951,562,248.69/374,118.72
  6. Step 6: Final answer
    x = 293,894.84

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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.