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Finding the Fourth Proportional to 455,995.17, 683,623.80 and 189,955.53

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Solution

The fourth proportional to 455,995.17, 683,623.80 and 189,955.53 is: 284,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,995.17 : 683,623.80 = 189,955.53 : x
  2. Step 2: Convert to fraction form
    455,995.17/683,623.80 = 189,955.53/x
  3. Step 3: Cross multiply
    455,995.17x = 683,623.80 × 189,955.53
  4. Step 4: Simplify right side
    455,995.17x = 129,858,121,249.61
  5. Step 5: Solve for x
    x = 129,858,121,249.61/455,995.17
  6. Step 6: Final answer
    x = 284,779.60

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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.