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Finding the Fourth Proportional to 405,570.88, 608,443.59 and 121,283.95

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Solution

The fourth proportional to 405,570.88, 608,443.59 and 121,283.95 is: 181,952.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,570.88 : 608,443.59 = 121,283.95 : x
  2. Step 2: Convert to fraction form
    405,570.88/608,443.59 = 121,283.95/x
  3. Step 3: Cross multiply
    405,570.88x = 608,443.59 × 121,283.95
  4. Step 4: Simplify right side
    405,570.88x = 73,794,441,947.38
  5. Step 5: Solve for x
    x = 73,794,441,947.38/405,570.88
  6. Step 6: Final answer
    x = 181,952.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.