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Finding the Fourth Proportional to 98,630.64, 136,100.52 and 56,186.64

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Solution

The fourth proportional to 98,630.64, 136,100.52 and 56,186.64 is: 77,532.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,630.64 : 136,100.52 = 56,186.64 : x
  2. Step 2: Convert to fraction form
    98,630.64/136,100.52 = 56,186.64/x
  3. Step 3: Cross multiply
    98,630.64x = 136,100.52 × 56,186.64
  4. Step 4: Simplify right side
    98,630.64x = 7,647,030,921.05
  5. Step 5: Solve for x
    x = 7,647,030,921.05/98,630.64
  6. Step 6: Final answer
    x = 77,532.00

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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.