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Finding the Fourth Proportional to 405,314.28, 607,643.17 and 168,833.97

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Solution

The fourth proportional to 405,314.28, 607,643.17 and 168,833.97 is: 253,114.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,314.28 : 607,643.17 = 168,833.97 : x
  2. Step 2: Convert to fraction form
    405,314.28/607,643.17 = 168,833.97/x
  3. Step 3: Cross multiply
    405,314.28x = 607,643.17 × 168,833.97
  4. Step 4: Simplify right side
    405,314.28x = 102,590,808,312.40
  5. Step 5: Solve for x
    x = 102,590,808,312.40/405,314.28
  6. Step 6: Final answer
    x = 253,114.22

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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.