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Finding the Fourth Proportional to 289,511.84, 399,525 and 162,188.48

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Solution

The fourth proportional to 289,511.84, 399,525 and 162,188.48 is: 223,819.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,511.84 : 399,525 = 162,188.48 : x
  2. Step 2: Convert to fraction form
    289,511.84/399,525 = 162,188.48/x
  3. Step 3: Cross multiply
    289,511.84x = 399,525 × 162,188.48
  4. Step 4: Simplify right side
    289,511.84x = 64,798,352,472.00
  5. Step 5: Solve for x
    x = 64,798,352,472.00/289,511.84
  6. Step 6: Final answer
    x = 223,819.35

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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.