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Finding the Fourth Proportional to 355,085.21, 532,629.84 and 118,427.20

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Solution

The fourth proportional to 355,085.21, 532,629.84 and 118,427.20 is: 177,641.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,085.21 : 532,629.84 = 118,427.20 : x
  2. Step 2: Convert to fraction form
    355,085.21/532,629.84 = 118,427.20/x
  3. Step 3: Cross multiply
    355,085.21x = 532,629.84 × 118,427.20
  4. Step 4: Simplify right side
    355,085.21x = 63,077,859,995.51
  5. Step 5: Solve for x
    x = 63,077,859,995.51/355,085.21
  6. Step 6: Final answer
    x = 177,641.48

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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.