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Finding the Fourth Proportional to 553,699.90, 830,619.16 and 216,697.04

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Solution

The fourth proportional to 553,699.90, 830,619.16 and 216,697.04 is: 325,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,699.90 : 830,619.16 = 216,697.04 : x
  2. Step 2: Convert to fraction form
    553,699.90/830,619.16 = 216,697.04/x
  3. Step 3: Cross multiply
    553,699.90x = 830,619.16 × 216,697.04
  4. Step 4: Simplify right side
    553,699.90x = 179,992,711,759.27
  5. Step 5: Solve for x
    x = 179,992,711,759.27/553,699.90
  6. Step 6: Final answer
    x = 325,072.68

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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.