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Finding the Fourth Proportional to 157,051.40, 235,317.90 and 133,723.40

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Solution

The fourth proportional to 157,051.40, 235,317.90 and 133,723.40 is: 200,364.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,051.40 : 235,317.90 = 133,723.40 : x
  2. Step 2: Convert to fraction form
    157,051.40/235,317.90 = 133,723.40/x
  3. Step 3: Cross multiply
    157,051.40x = 235,317.90 × 133,723.40
  4. Step 4: Simplify right side
    157,051.40x = 31,467,509,668.86
  5. Step 5: Solve for x
    x = 31,467,509,668.86/157,051.40
  6. Step 6: Final answer
    x = 200,364.40

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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.