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Finding the Fourth Proportional to 70,586.85, 97,411.42 and 38,755.87

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Solution

The fourth proportional to 70,586.85, 97,411.42 and 38,755.87 is: 53,483.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,586.85 : 97,411.42 = 38,755.87 : x
  2. Step 2: Convert to fraction form
    70,586.85/97,411.42 = 38,755.87/x
  3. Step 3: Cross multiply
    70,586.85x = 97,411.42 × 38,755.87
  4. Step 4: Simplify right side
    70,586.85x = 3,775,264,330.04
  5. Step 5: Solve for x
    x = 3,775,264,330.04/70,586.85
  6. Step 6: Final answer
    x = 53,483.96

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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.