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Finding the Fourth Proportional to 456,313.66, 684,418.12 and 119,386.80

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Solution

The fourth proportional to 456,313.66, 684,418.12 and 119,386.80 is: 179,066.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,313.66 : 684,418.12 = 119,386.80 : x
  2. Step 2: Convert to fraction form
    456,313.66/684,418.12 = 119,386.80/x
  3. Step 3: Cross multiply
    456,313.66x = 684,418.12 × 119,386.80
  4. Step 4: Simplify right side
    456,313.66x = 81,710,489,208.82
  5. Step 5: Solve for x
    x = 81,710,489,208.82/456,313.66
  6. Step 6: Final answer
    x = 179,066.50

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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.