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Finding the Fourth Proportional to 633,911.63, 874,668.78 and 375,674.76

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Solution

The fourth proportional to 633,911.63, 874,668.78 and 375,674.76 is: 518,354.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,911.63 : 874,668.78 = 375,674.76 : x
  2. Step 2: Convert to fraction form
    633,911.63/874,668.78 = 375,674.76/x
  3. Step 3: Cross multiply
    633,911.63x = 874,668.78 × 375,674.76
  4. Step 4: Simplify right side
    633,911.63x = 328,590,984,005.99
  5. Step 5: Solve for x
    x = 328,590,984,005.99/633,911.63
  6. Step 6: Final answer
    x = 518,354.56

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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.