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Finding the Fourth Proportional to 689,328.63, 950,805.95 and 447,178.46

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Solution

The fourth proportional to 689,328.63, 950,805.95 and 447,178.46 is: 616,802.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,328.63 : 950,805.95 = 447,178.46 : x
  2. Step 2: Convert to fraction form
    689,328.63/950,805.95 = 447,178.46/x
  3. Step 3: Cross multiply
    689,328.63x = 950,805.95 × 447,178.46
  4. Step 4: Simplify right side
    689,328.63x = 425,179,933,489.92
  5. Step 5: Solve for x
    x = 425,179,933,489.92/689,328.63
  6. Step 6: Final answer
    x = 616,802.95

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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.