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Finding the Fourth Proportional to 70,762.92, 97,652.82 and 38,931.12

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Solution

The fourth proportional to 70,762.92, 97,652.82 and 38,931.12 is: 53,724.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,762.92 : 97,652.82 = 38,931.12 : x
  2. Step 2: Convert to fraction form
    70,762.92/97,652.82 = 38,931.12/x
  3. Step 3: Cross multiply
    70,762.92x = 97,652.82 × 38,931.12
  4. Step 4: Simplify right side
    70,762.92x = 3,801,733,653.76
  5. Step 5: Solve for x
    x = 3,801,733,653.76/70,762.92
  6. Step 6: Final answer
    x = 53,724.94

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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.