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Finding the Fourth Proportional to 426,956.88, 589,223.28 and 245,696.40

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Solution

The fourth proportional to 426,956.88, 589,223.28 and 245,696.40 is: 339,074.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,956.88 : 589,223.28 = 245,696.40 : x
  2. Step 2: Convert to fraction form
    426,956.88/589,223.28 = 245,696.40/x
  3. Step 3: Cross multiply
    426,956.88x = 589,223.28 × 245,696.40
  4. Step 4: Simplify right side
    426,956.88x = 144,770,038,692.19
  5. Step 5: Solve for x
    x = 144,770,038,692.19/426,956.88
  6. Step 6: Final answer
    x = 339,074.14

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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.