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Finding the Fourth Proportional to 94,658.90, 130,638.42 and 70,744.05

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Solution

The fourth proportional to 94,658.90, 130,638.42 and 70,744.05 is: 97,633.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,658.90 : 130,638.42 = 70,744.05 : x
  2. Step 2: Convert to fraction form
    94,658.90/130,638.42 = 70,744.05/x
  3. Step 3: Cross multiply
    94,658.90x = 130,638.42 × 70,744.05
  4. Step 4: Simplify right side
    94,658.90x = 9,241,890,916.40
  5. Step 5: Solve for x
    x = 9,241,890,916.40/94,658.90
  6. Step 6: Final answer
    x = 97,633.62

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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.