Home / 70,528.32-105,790.56-20,606.40

Finding the Fourth Proportional to 70,528.32, 105,790.56 and 20,606.40

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Solution

The fourth proportional to 70,528.32, 105,790.56 and 20,606.40 is: 30,909.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,528.32 : 105,790.56 = 20,606.40 : x
  2. Step 2: Convert to fraction form
    70,528.32/105,790.56 = 20,606.40/x
  3. Step 3: Cross multiply
    70,528.32x = 105,790.56 × 20,606.40
  4. Step 4: Simplify right side
    70,528.32x = 2,179,962,595.58
  5. Step 5: Solve for x
    x = 2,179,962,595.58/70,528.32
  6. Step 6: Final answer
    x = 30,909.04

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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.