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Finding the Fourth Proportional to 70,960.38, 97,925.99 and 39,130.42

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Solution

The fourth proportional to 70,960.38, 97,925.99 and 39,130.42 is: 54,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,960.38 : 97,925.99 = 39,130.42 : x
  2. Step 2: Convert to fraction form
    70,960.38/97,925.99 = 39,130.42/x
  3. Step 3: Cross multiply
    70,960.38x = 97,925.99 × 39,130.42
  4. Step 4: Simplify right side
    70,960.38x = 3,831,885,117.62
  5. Step 5: Solve for x
    x = 3,831,885,117.62/70,960.38
  6. Step 6: Final answer
    x = 54,000.35

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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.