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Finding the Fourth Proportional to 403,133.63, 604,787.90 and 122,643.59

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Solution

The fourth proportional to 403,133.63, 604,787.90 and 122,643.59 is: 183,991.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,133.63 : 604,787.90 = 122,643.59 : x
  2. Step 2: Convert to fraction form
    403,133.63/604,787.90 = 122,643.59/x
  3. Step 3: Cross multiply
    403,133.63x = 604,787.90 × 122,643.59
  4. Step 4: Simplify right side
    403,133.63x = 74,173,355,607.40
  5. Step 5: Solve for x
    x = 74,173,355,607.40/403,133.63
  6. Step 6: Final answer
    x = 183,991.98

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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.