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Finding the Fourth Proportional to 35,859.84, 49,485.70 and 20,750.40

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Solution

The fourth proportional to 35,859.84, 49,485.70 and 20,750.40 is: 28,635.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,859.84 : 49,485.70 = 20,750.40 : x
  2. Step 2: Convert to fraction form
    35,859.84/49,485.70 = 20,750.40/x
  3. Step 3: Cross multiply
    35,859.84x = 49,485.70 × 20,750.40
  4. Step 4: Simplify right side
    35,859.84x = 1,026,847,965.53
  5. Step 5: Solve for x
    x = 1,026,847,965.53/35,859.84
  6. Step 6: Final answer
    x = 28,635.04

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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.