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Finding the Fourth Proportional to 357,668.33, 536,500.36 and 91,428.41

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Solution

The fourth proportional to 357,668.33, 536,500.36 and 91,428.41 is: 137,142.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,668.33 : 536,500.36 = 91,428.41 : x
  2. Step 2: Convert to fraction form
    357,668.33/536,500.36 = 91,428.41/x
  3. Step 3: Cross multiply
    357,668.33x = 536,500.36 × 91,428.41
  4. Step 4: Simplify right side
    357,668.33x = 49,051,376,334.76
  5. Step 5: Solve for x
    x = 49,051,376,334.76/357,668.33
  6. Step 6: Final answer
    x = 137,142.08

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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.