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Finding the Fourth Proportional to 50,698.50, 76,047.75 and 13,762.50

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Solution

The fourth proportional to 50,698.50, 76,047.75 and 13,762.50 is: 20,643.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,698.50 : 76,047.75 = 13,762.50 : x
  2. Step 2: Convert to fraction form
    50,698.50/76,047.75 = 13,762.50/x
  3. Step 3: Cross multiply
    50,698.50x = 76,047.75 × 13,762.50
  4. Step 4: Simplify right side
    50,698.50x = 1,046,607,159.38
  5. Step 5: Solve for x
    x = 1,046,607,159.38/50,698.50
  6. Step 6: Final answer
    x = 20,643.75

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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.