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Finding the Fourth Proportional to 545,346.67, 817,921.50 and 190,462.18

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Solution

The fourth proportional to 545,346.67, 817,921.50 and 190,462.18 is: 285,658.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,346.67 : 817,921.50 = 190,462.18 : x
  2. Step 2: Convert to fraction form
    545,346.67/817,921.50 = 190,462.18/x
  3. Step 3: Cross multiply
    545,346.67x = 817,921.50 × 190,462.18
  4. Step 4: Simplify right side
    545,346.67x = 155,783,111,958.87
  5. Step 5: Solve for x
    x = 155,783,111,958.87/545,346.67
  6. Step 6: Final answer
    x = 285,658.87

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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.