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Finding the Fourth Proportional to 704,481.12, 972,183.84 and 402,681.60

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Solution

The fourth proportional to 704,481.12, 972,183.84 and 402,681.60 is: 555,700.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,481.12 : 972,183.84 = 402,681.60 : x
  2. Step 2: Convert to fraction form
    704,481.12/972,183.84 = 402,681.60/x
  3. Step 3: Cross multiply
    704,481.12x = 972,183.84 × 402,681.60
  4. Step 4: Simplify right side
    704,481.12x = 391,480,544,185.34
  5. Step 5: Solve for x
    x = 391,480,544,185.34/704,481.12
  6. Step 6: Final answer
    x = 555,700.55

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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.