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Finding the Fourth Proportional to 476,894.32, 715,348.78 and 121,900.48

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Solution

The fourth proportional to 476,894.32, 715,348.78 and 121,900.48 is: 182,852.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,894.32 : 715,348.78 = 121,900.48 : x
  2. Step 2: Convert to fraction form
    476,894.32/715,348.78 = 121,900.48/x
  3. Step 3: Cross multiply
    476,894.32x = 715,348.78 × 121,900.48
  4. Step 4: Simplify right side
    476,894.32x = 87,201,359,649.41
  5. Step 5: Solve for x
    x = 87,201,359,649.41/476,894.32
  6. Step 6: Final answer
    x = 182,852.59

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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.