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Finding the Fourth Proportional to 421,570.93, 632,364.60 and 155,194.33

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Solution

The fourth proportional to 421,570.93, 632,364.60 and 155,194.33 is: 232,794.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,570.93 : 632,364.60 = 155,194.33 : x
  2. Step 2: Convert to fraction form
    421,570.93/632,364.60 = 155,194.33/x
  3. Step 3: Cross multiply
    421,570.93x = 632,364.60 × 155,194.33
  4. Step 4: Simplify right side
    421,570.93x = 98,139,400,412.72
  5. Step 5: Solve for x
    x = 98,139,400,412.72/421,570.93
  6. Step 6: Final answer
    x = 232,794.52

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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.