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Finding the Fourth Proportional to 356,656.80, 534,531.60 and 146,056.80

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Solution

The fourth proportional to 356,656.80, 534,531.60 and 146,056.80 is: 218,899.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,656.80 : 534,531.60 = 146,056.80 : x
  2. Step 2: Convert to fraction form
    356,656.80/534,531.60 = 146,056.80/x
  3. Step 3: Cross multiply
    356,656.80x = 534,531.60 × 146,056.80
  4. Step 4: Simplify right side
    356,656.80x = 78,071,974,994.88
  5. Step 5: Solve for x
    x = 78,071,974,994.88/356,656.80
  6. Step 6: Final answer
    x = 218,899.44

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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.