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Finding the Fourth Proportional to 374,053.90, 516,197.66 and 212,919.30

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Solution

The fourth proportional to 374,053.90, 516,197.66 and 212,919.30 is: 293,830.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,053.90 : 516,197.66 = 212,919.30 : x
  2. Step 2: Convert to fraction form
    374,053.90/516,197.66 = 212,919.30/x
  3. Step 3: Cross multiply
    374,053.90x = 516,197.66 × 212,919.30
  4. Step 4: Simplify right side
    374,053.90x = 109,908,444,428.84
  5. Step 5: Solve for x
    x = 109,908,444,428.84/374,053.90
  6. Step 6: Final answer
    x = 293,830.50

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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.