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Finding the Fourth Proportional to 70,412.99, 105,636.09 and 23,027.90

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Solution

The fourth proportional to 70,412.99, 105,636.09 and 23,027.90 is: 34,547.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,412.99 : 105,636.09 = 23,027.90 : x
  2. Step 2: Convert to fraction form
    70,412.99/105,636.09 = 23,027.90/x
  3. Step 3: Cross multiply
    70,412.99x = 105,636.09 × 23,027.90
  4. Step 4: Simplify right side
    70,412.99x = 2,432,576,875.09
  5. Step 5: Solve for x
    x = 2,432,576,875.09/70,412.99
  6. Step 6: Final answer
    x = 34,547.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.