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Finding the Fourth Proportional to 346,643.55, 519,965.33 and 122,002.20

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Solution

The fourth proportional to 346,643.55, 519,965.33 and 122,002.20 is: 183,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,643.55 : 519,965.33 = 122,002.20 : x
  2. Step 2: Convert to fraction form
    346,643.55/519,965.33 = 122,002.20/x
  3. Step 3: Cross multiply
    346,643.55x = 519,965.33 × 122,002.20
  4. Step 4: Simplify right side
    346,643.55x = 63,436,913,573.72
  5. Step 5: Solve for x
    x = 63,436,913,573.72/346,643.55
  6. Step 6: Final answer
    x = 183,003.30

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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.