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Finding the Fourth Proportional to 559,943.54, 839,915.94 and 139,219.46

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Solution

The fourth proportional to 559,943.54, 839,915.94 and 139,219.46 is: 208,829.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,943.54 : 839,915.94 = 139,219.46 : x
  2. Step 2: Convert to fraction form
    559,943.54/839,915.94 = 139,219.46/x
  3. Step 3: Cross multiply
    559,943.54x = 839,915.94 × 139,219.46
  4. Step 4: Simplify right side
    559,943.54x = 116,932,643,612.19
  5. Step 5: Solve for x
    x = 116,932,643,612.19/559,943.54
  6. Step 6: Final answer
    x = 208,829.35

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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.