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Finding the Fourth Proportional to 185,636.64, 278,460.42 and 45,395.28

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Solution

The fourth proportional to 185,636.64, 278,460.42 and 45,395.28 is: 68,094.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,636.64 : 278,460.42 = 45,395.28 : x
  2. Step 2: Convert to fraction form
    185,636.64/278,460.42 = 45,395.28/x
  3. Step 3: Cross multiply
    185,636.64x = 278,460.42 × 45,395.28
  4. Step 4: Simplify right side
    185,636.64x = 12,640,788,734.82
  5. Step 5: Solve for x
    x = 12,640,788,734.82/185,636.64
  6. Step 6: Final answer
    x = 68,094.26

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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.