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Finding the Fourth Proportional to 93,678.26, 129,118.50 and 71,010

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Solution

The fourth proportional to 93,678.26, 129,118.50 and 71,010 is: 97,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,678.26 : 129,118.50 = 71,010 : x
  2. Step 2: Convert to fraction form
    93,678.26/129,118.50 = 71,010/x
  3. Step 3: Cross multiply
    93,678.26x = 129,118.50 × 71,010
  4. Step 4: Simplify right side
    93,678.26x = 9,168,704,685
  5. Step 5: Solve for x
    x = 9,168,704,685/93,678.26
  6. Step 6: Final answer
    x = 97,874.42

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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.