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Finding the Fourth Proportional to 353,461.40, 530,192.10 and 347,629.40

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Solution

The fourth proportional to 353,461.40, 530,192.10 and 347,629.40 is: 521,444.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,461.40 : 530,192.10 = 347,629.40 : x
  2. Step 2: Convert to fraction form
    353,461.40/530,192.10 = 347,629.40/x
  3. Step 3: Cross multiply
    353,461.40x = 530,192.10 × 347,629.40
  4. Step 4: Simplify right side
    353,461.40x = 184,310,361,607.74
  5. Step 5: Solve for x
    x = 184,310,361,607.74/353,461.40
  6. Step 6: Final answer
    x = 521,444.10

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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.