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Finding the Fourth Proportional to 328,540.40, 453,385.64 and 185,300.12

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Solution

The fourth proportional to 328,540.40, 453,385.64 and 185,300.12 is: 255,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,540.40 : 453,385.64 = 185,300.12 : x
  2. Step 2: Convert to fraction form
    328,540.40/453,385.64 = 185,300.12/x
  3. Step 3: Cross multiply
    328,540.40x = 453,385.64 × 185,300.12
  4. Step 4: Simplify right side
    328,540.40x = 84,012,413,498.28
  5. Step 5: Solve for x
    x = 84,012,413,498.28/328,540.40
  6. Step 6: Final answer
    x = 255,714.10

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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.