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Finding the Fourth Proportional to 877,076.72, 1,210,367.04 and 474,668.72

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Solution

The fourth proportional to 877,076.72, 1,210,367.04 and 474,668.72 is: 655,043.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,076.72 : 1,210,367.04 = 474,668.72 : x
  2. Step 2: Convert to fraction form
    877,076.72/1,210,367.04 = 474,668.72/x
  3. Step 3: Cross multiply
    877,076.72x = 1,210,367.04 × 474,668.72
  4. Step 4: Simplify right side
    877,076.72x = 574,523,373,606.99
  5. Step 5: Solve for x
    x = 574,523,373,606.99/877,076.72
  6. Step 6: Final answer
    x = 655,043.46

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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.