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Finding the Fourth Proportional to 70,312.89, 97,031.94 and 38,483.84

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Solution

The fourth proportional to 70,312.89, 97,031.94 and 38,483.84 is: 53,107.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,312.89 : 97,031.94 = 38,483.84 : x
  2. Step 2: Convert to fraction form
    70,312.89/97,031.94 = 38,483.84/x
  3. Step 3: Cross multiply
    70,312.89x = 97,031.94 × 38,483.84
  4. Step 4: Simplify right side
    70,312.89x = 3,734,161,653.85
  5. Step 5: Solve for x
    x = 3,734,161,653.85/70,312.89
  6. Step 6: Final answer
    x = 53,107.78

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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.