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Finding the Fourth Proportional to 98,628.58, 147,928.29 and 36,284.50

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Solution

The fourth proportional to 98,628.58, 147,928.29 and 36,284.50 is: 54,421.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,628.58 : 147,928.29 = 36,284.50 : x
  2. Step 2: Convert to fraction form
    98,628.58/147,928.29 = 36,284.50/x
  3. Step 3: Cross multiply
    98,628.58x = 147,928.29 × 36,284.50
  4. Step 4: Simplify right side
    98,628.58x = 5,367,504,038.51
  5. Step 5: Solve for x
    x = 5,367,504,038.51/98,628.58
  6. Step 6: Final answer
    x = 54,421.39

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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.