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Finding the Fourth Proportional to 633,911.64, 874,758.42 and 347,411.40

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Solution

The fourth proportional to 633,911.64, 874,758.42 and 347,411.40 is: 479,406.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,911.64 : 874,758.42 = 347,411.40 : x
  2. Step 2: Convert to fraction form
    633,911.64/874,758.42 = 347,411.40/x
  3. Step 3: Cross multiply
    633,911.64x = 874,758.42 × 347,411.40
  4. Step 4: Simplify right side
    633,911.64x = 303,901,047,353.99
  5. Step 5: Solve for x
    x = 303,901,047,353.99/633,911.64
  6. Step 6: Final answer
    x = 479,406.01

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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.