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Finding the Fourth Proportional to 328,455.96, 492,465.06 and 118,066.56

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Solution

The fourth proportional to 328,455.96, 492,465.06 and 118,066.56 is: 177,021.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,455.96 : 492,465.06 = 118,066.56 : x
  2. Step 2: Convert to fraction form
    328,455.96/492,465.06 = 118,066.56/x
  3. Step 3: Cross multiply
    328,455.96x = 492,465.06 × 118,066.56
  4. Step 4: Simplify right side
    328,455.96x = 58,143,655,554.39
  5. Step 5: Solve for x
    x = 58,143,655,554.39/328,455.96
  6. Step 6: Final answer
    x = 177,021.16

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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.