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Finding the Fourth Proportional to 329,865.72, 455,216.66 and 186,655.69

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Solution

The fourth proportional to 329,865.72, 455,216.66 and 186,655.69 is: 257,585.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,865.72 : 455,216.66 = 186,655.69 : x
  2. Step 2: Convert to fraction form
    329,865.72/455,216.66 = 186,655.69/x
  3. Step 3: Cross multiply
    329,865.72x = 455,216.66 × 186,655.69
  4. Step 4: Simplify right side
    329,865.72x = 84,968,779,771.80
  5. Step 5: Solve for x
    x = 84,968,779,771.80/329,865.72
  6. Step 6: Final answer
    x = 257,585.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.