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Finding the Fourth Proportional to 423,935.89, 585,057.69 and 242,643.96

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Solution

The fourth proportional to 423,935.89, 585,057.69 and 242,643.96 is: 334,863.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,935.89 : 585,057.69 = 242,643.96 : x
  2. Step 2: Convert to fraction form
    423,935.89/585,057.69 = 242,643.96/x
  3. Step 3: Cross multiply
    423,935.89x = 585,057.69 × 242,643.96
  4. Step 4: Simplify right side
    423,935.89x = 141,960,714,730.05
  5. Step 5: Solve for x
    x = 141,960,714,730.05/423,935.89
  6. Step 6: Final answer
    x = 334,863.64

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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.