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Finding the Fourth Proportional to 70,709.71, 97,581.05 and 38,446.16

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Solution

The fourth proportional to 70,709.71, 97,581.05 and 38,446.16 is: 53,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,709.71 : 97,581.05 = 38,446.16 : x
  2. Step 2: Convert to fraction form
    70,709.71/97,581.05 = 38,446.16/x
  3. Step 3: Cross multiply
    70,709.71x = 97,581.05 × 38,446.16
  4. Step 4: Simplify right side
    70,709.71x = 3,751,616,890.46
  5. Step 5: Solve for x
    x = 3,751,616,890.46/70,709.71
  6. Step 6: Final answer
    x = 53,056.60

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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.