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Finding the Fourth Proportional to 572,343.72, 789,674.28 and 357,701.82

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Solution

The fourth proportional to 572,343.72, 789,674.28 and 357,701.82 is: 493,528.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,343.72 : 789,674.28 = 357,701.82 : x
  2. Step 2: Convert to fraction form
    572,343.72/789,674.28 = 357,701.82/x
  3. Step 3: Cross multiply
    572,343.72x = 789,674.28 × 357,701.82
  4. Step 4: Simplify right side
    572,343.72x = 282,467,927,163.19
  5. Step 5: Solve for x
    x = 282,467,927,163.19/572,343.72
  6. Step 6: Final answer
    x = 493,528.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.