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Finding the Fourth Proportional to 30,638.70, 45,953.55 and 9,573.84

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Solution

The fourth proportional to 30,638.70, 45,953.55 and 9,573.84 is: 14,359.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638.70 : 45,953.55 = 9,573.84 : x
  2. Step 2: Convert to fraction form
    30,638.70/45,953.55 = 9,573.84/x
  3. Step 3: Cross multiply
    30,638.70x = 45,953.55 × 9,573.84
  4. Step 4: Simplify right side
    30,638.70x = 439,951,935.13
  5. Step 5: Solve for x
    x = 439,951,935.13/30,638.70
  6. Step 6: Final answer
    x = 14,359.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.