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Finding the Fourth Proportional to 349,178.96, 523,998.12 and 191,518

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Solution

The fourth proportional to 349,178.96, 523,998.12 and 191,518 is: 287,402.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,178.96 : 523,998.12 = 191,518 : x
  2. Step 2: Convert to fraction form
    349,178.96/523,998.12 = 191,518/x
  3. Step 3: Cross multiply
    349,178.96x = 523,998.12 × 191,518
  4. Step 4: Simplify right side
    349,178.96x = 100,355,071,946.16
  5. Step 5: Solve for x
    x = 100,355,071,946.16/349,178.96
  6. Step 6: Final answer
    x = 287,402.98

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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.