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Finding the Fourth Proportional to 35,742.20, 53,611.80 and 12,048.20

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Solution

The fourth proportional to 35,742.20, 53,611.80 and 12,048.20 is: 18,071.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,742.20 : 53,611.80 = 12,048.20 : x
  2. Step 2: Convert to fraction form
    35,742.20/53,611.80 = 12,048.20/x
  3. Step 3: Cross multiply
    35,742.20x = 53,611.80 × 12,048.20
  4. Step 4: Simplify right side
    35,742.20x = 645,925,688.76
  5. Step 5: Solve for x
    x = 645,925,688.76/35,742.20
  6. Step 6: Final answer
    x = 18,071.79

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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.