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Finding the Fourth Proportional to 357,087.81, 535,576.35 and 104,300.42

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Solution

The fourth proportional to 357,087.81, 535,576.35 and 104,300.42 is: 156,434.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,087.81 : 535,576.35 = 104,300.42 : x
  2. Step 2: Convert to fraction form
    357,087.81/535,576.35 = 104,300.42/x
  3. Step 3: Cross multiply
    357,087.81x = 535,576.35 × 104,300.42
  4. Step 4: Simplify right side
    357,087.81x = 55,860,839,561.08
  5. Step 5: Solve for x
    x = 55,860,839,561.08/357,087.81
  6. Step 6: Final answer
    x = 156,434.46

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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.