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Finding the Fourth Proportional to 619,482.81, 855,186.63 and 415,459.11

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Solution

The fourth proportional to 619,482.81, 855,186.63 and 415,459.11 is: 573,535.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,482.81 : 855,186.63 = 415,459.11 : x
  2. Step 2: Convert to fraction form
    619,482.81/855,186.63 = 415,459.11/x
  3. Step 3: Cross multiply
    619,482.81x = 855,186.63 × 415,459.11
  4. Step 4: Simplify right side
    619,482.81x = 355,295,076,183.70
  5. Step 5: Solve for x
    x = 355,295,076,183.70/619,482.81
  6. Step 6: Final answer
    x = 573,535.00

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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.