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Finding the Fourth Proportional to 559,920.02, 839,872.74 and 139,199.54

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Solution

The fourth proportional to 559,920.02, 839,872.74 and 139,199.54 is: 208,797.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,920.02 : 839,872.74 = 139,199.54 : x
  2. Step 2: Convert to fraction form
    559,920.02/839,872.74 = 139,199.54/x
  3. Step 3: Cross multiply
    559,920.02x = 839,872.74 × 139,199.54
  4. Step 4: Simplify right side
    559,920.02x = 116,909,899,066.54
  5. Step 5: Solve for x
    x = 116,909,899,066.54/559,920.02
  6. Step 6: Final answer
    x = 208,797.50

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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.