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Finding the Fourth Proportional to 625,983, 863,857.61 and 339,503.32

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Solution

The fourth proportional to 625,983, 863,857.61 and 339,503.32 is: 468,515.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,983 : 863,857.61 = 339,503.32 : x
  2. Step 2: Convert to fraction form
    625,983/863,857.61 = 339,503.32/x
  3. Step 3: Cross multiply
    625,983x = 863,857.61 × 339,503.32
  4. Step 4: Simplify right side
    625,983x = 293,282,526,602.27
  5. Step 5: Solve for x
    x = 293,282,526,602.27/625,983
  6. Step 6: Final answer
    x = 468,515.16

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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.