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Finding the Fourth Proportional to 641,461.34, 885,219.00 and 347,111.06

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Solution

The fourth proportional to 641,461.34, 885,219.00 and 347,111.06 is: 479,014.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,461.34 : 885,219.00 = 347,111.06 : x
  2. Step 2: Convert to fraction form
    641,461.34/885,219.00 = 347,111.06/x
  3. Step 3: Cross multiply
    641,461.34x = 885,219.00 × 347,111.06
  4. Step 4: Simplify right side
    641,461.34x = 307,269,307,511.12
  5. Step 5: Solve for x
    x = 307,269,307,511.12/641,461.34
  6. Step 6: Final answer
    x = 479,014.54

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.