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Finding the Fourth Proportional to 357,647.84, 536,470.39 and 91,407.93

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Solution

The fourth proportional to 357,647.84, 536,470.39 and 91,407.93 is: 137,111.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,647.84 : 536,470.39 = 91,407.93 : x
  2. Step 2: Convert to fraction form
    357,647.84/536,470.39 = 91,407.93/x
  3. Step 3: Cross multiply
    357,647.84x = 536,470.39 × 91,407.93
  4. Step 4: Simplify right side
    357,647.84x = 49,037,645,958.69
  5. Step 5: Solve for x
    x = 49,037,645,958.69/357,647.84
  6. Step 6: Final answer
    x = 137,111.54

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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.