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Finding the Fourth Proportional to 330,955.16, 496,333.77 and 120,543.89

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Solution

The fourth proportional to 330,955.16, 496,333.77 and 120,543.89 is: 180,779.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,955.16 : 496,333.77 = 120,543.89 : x
  2. Step 2: Convert to fraction form
    330,955.16/496,333.77 = 120,543.89/x
  3. Step 3: Cross multiply
    330,955.16x = 496,333.77 × 120,543.89
  4. Step 4: Simplify right side
    330,955.16x = 59,830,000,892.50
  5. Step 5: Solve for x
    x = 59,830,000,892.50/330,955.16
  6. Step 6: Final answer
    x = 180,779.78

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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.