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Finding the Fourth Proportional to 641,461.68, 885,219.47 and 347,111.40

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Solution

The fourth proportional to 641,461.68, 885,219.47 and 347,111.40 is: 479,015.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,461.68 : 885,219.47 = 347,111.40 : x
  2. Step 2: Convert to fraction form
    641,461.68/885,219.47 = 347,111.40/x
  3. Step 3: Cross multiply
    641,461.68x = 885,219.47 × 347,111.40
  4. Step 4: Simplify right side
    641,461.68x = 307,269,767,803.40
  5. Step 5: Solve for x
    x = 307,269,767,803.40/641,461.68
  6. Step 6: Final answer
    x = 479,015.00

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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.