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Finding the Fourth Proportional to 328,501.10, 492,751.65 and 141,512.60

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Solution

The fourth proportional to 328,501.10, 492,751.65 and 141,512.60 is: 212,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,501.10 : 492,751.65 = 141,512.60 : x
  2. Step 2: Convert to fraction form
    328,501.10/492,751.65 = 141,512.60/x
  3. Step 3: Cross multiply
    328,501.10x = 492,751.65 × 141,512.60
  4. Step 4: Simplify right side
    328,501.10x = 69,730,567,145.79
  5. Step 5: Solve for x
    x = 69,730,567,145.79/328,501.10
  6. Step 6: Final answer
    x = 212,268.90

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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.