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Finding the Fourth Proportional to 633,561.90, 874,312.83 and 347,099.82

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Solution

The fourth proportional to 633,561.90, 874,312.83 and 347,099.82 is: 478,996.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,561.90 : 874,312.83 = 347,099.82 : x
  2. Step 2: Convert to fraction form
    633,561.90/874,312.83 = 347,099.82/x
  3. Step 3: Cross multiply
    633,561.90x = 874,312.83 × 347,099.82
  4. Step 4: Simplify right side
    633,561.90x = 303,473,825,916.69
  5. Step 5: Solve for x
    x = 303,473,825,916.69/633,561.90
  6. Step 6: Final answer
    x = 478,996.33

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1.5x scale

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.