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Finding the Fourth Proportional to 325,018.56, 487,588.88 and 147,538.04

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Solution

The fourth proportional to 325,018.56, 487,588.88 and 147,538.04 is: 221,334.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,018.56 : 487,588.88 = 147,538.04 : x
  2. Step 2: Convert to fraction form
    325,018.56/487,588.88 = 147,538.04/x
  3. Step 3: Cross multiply
    325,018.56x = 487,588.88 × 147,538.04
  4. Step 4: Simplify right side
    325,018.56x = 71,937,907,681.00
  5. Step 5: Solve for x
    x = 71,937,907,681.00/325,018.56
  6. Step 6: Final answer
    x = 221,334.77

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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.