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Finding the Fourth Proportional to 439,892.40, 659,838.60 and 282,428.40

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Solution

The fourth proportional to 439,892.40, 659,838.60 and 282,428.40 is: 423,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,892.40 : 659,838.60 = 282,428.40 : x
  2. Step 2: Convert to fraction form
    439,892.40/659,838.60 = 282,428.40/x
  3. Step 3: Cross multiply
    439,892.40x = 659,838.60 × 282,428.40
  4. Step 4: Simplify right side
    439,892.40x = 186,357,160,056.24
  5. Step 5: Solve for x
    x = 186,357,160,056.24/439,892.40
  6. Step 6: Final answer
    x = 423,642.60

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