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Finding the Fourth Proportional to 639,169.92, 882,038.88 and 352,689.84

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Solution

The fourth proportional to 639,169.92, 882,038.88 and 352,689.84 is: 486,703.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,169.92 : 882,038.88 = 352,689.84 : x
  2. Step 2: Convert to fraction form
    639,169.92/882,038.88 = 352,689.84/x
  3. Step 3: Cross multiply
    639,169.92x = 882,038.88 × 352,689.84
  4. Step 4: Simplify right side
    639,169.92x = 311,086,151,460.98
  5. Step 5: Solve for x
    x = 311,086,151,460.98/639,169.92
  6. Step 6: Final answer
    x = 486,703.37

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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.