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Finding the Fourth Proportional to 190,511.61, 285,898.63 and 65,852.61

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Solution

The fourth proportional to 190,511.61, 285,898.63 and 65,852.61 is: 98,824.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,511.61 : 285,898.63 = 65,852.61 : x
  2. Step 2: Convert to fraction form
    190,511.61/285,898.63 = 65,852.61/x
  3. Step 3: Cross multiply
    190,511.61x = 285,898.63 × 65,852.61
  4. Step 4: Simplify right side
    190,511.61x = 18,827,170,980.92
  5. Step 5: Solve for x
    x = 18,827,170,980.92/190,511.61
  6. Step 6: Final answer
    x = 98,824.27

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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.