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Finding the Fourth Proportional to 638,133.98, 880,630.71 and 351,664.34

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Solution

The fourth proportional to 638,133.98, 880,630.71 and 351,664.34 is: 485,300.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,133.98 : 880,630.71 = 351,664.34 : x
  2. Step 2: Convert to fraction form
    638,133.98/880,630.71 = 351,664.34/x
  3. Step 3: Cross multiply
    638,133.98x = 880,630.71 × 351,664.34
  4. Step 4: Simplify right side
    638,133.98x = 309,686,417,415.88
  5. Step 5: Solve for x
    x = 309,686,417,415.88/638,133.98
  6. Step 6: Final answer
    x = 485,300.00

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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.