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Finding the Fourth Proportional to 103,632.35, 155,448.53 and 91,968.35

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Solution

The fourth proportional to 103,632.35, 155,448.53 and 91,968.35 is: 137,952.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,632.35 : 155,448.53 = 91,968.35 : x
  2. Step 2: Convert to fraction form
    103,632.35/155,448.53 = 91,968.35/x
  3. Step 3: Cross multiply
    103,632.35x = 155,448.53 × 91,968.35
  4. Step 4: Simplify right side
    103,632.35x = 14,296,344,814.03
  5. Step 5: Solve for x
    x = 14,296,344,814.03/103,632.35
  6. Step 6: Final answer
    x = 137,952.53

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1.5x scale

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.