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Finding the Fourth Proportional to 555,806.16, 767,013.21 and 301,157.28

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Solution

The fourth proportional to 555,806.16, 767,013.21 and 301,157.28 is: 415,597.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,806.16 : 767,013.21 = 301,157.28 : x
  2. Step 2: Convert to fraction form
    555,806.16/767,013.21 = 301,157.28/x
  3. Step 3: Cross multiply
    555,806.16x = 767,013.21 × 301,157.28
  4. Step 4: Simplify right side
    555,806.16x = 230,991,612,047.67
  5. Step 5: Solve for x
    x = 230,991,612,047.67/555,806.16
  6. Step 6: Final answer
    x = 415,597.43

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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.