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Finding the Fourth Proportional to 515,554.58, 773,344.84 and 141,576.50

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Solution

The fourth proportional to 515,554.58, 773,344.84 and 141,576.50 is: 212,368.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,554.58 : 773,344.84 = 141,576.50 : x
  2. Step 2: Convert to fraction form
    515,554.58/773,344.84 = 141,576.50/x
  3. Step 3: Cross multiply
    515,554.58x = 773,344.84 × 141,576.50
  4. Step 4: Simplify right side
    515,554.58x = 109,487,455,740.26
  5. Step 5: Solve for x
    x = 109,487,455,740.26/515,554.58
  6. Step 6: Final answer
    x = 212,368.31

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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.