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Finding the Fourth Proportional to 315,868.69, 473,733.44 and 91,180.32

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Solution

The fourth proportional to 315,868.69, 473,733.44 and 91,180.32 is: 136,750.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,868.69 : 473,733.44 = 91,180.32 : x
  2. Step 2: Convert to fraction form
    315,868.69/473,733.44 = 91,180.32/x
  3. Step 3: Cross multiply
    315,868.69x = 473,733.44 × 91,180.32
  4. Step 4: Simplify right side
    315,868.69x = 43,195,166,653.90
  5. Step 5: Solve for x
    x = 43,195,166,653.90/315,868.69
  6. Step 6: Final answer
    x = 136,750.39

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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.