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Finding the Fourth Proportional to 70,407.15, 105,609.74 and 17,099.49

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Solution

The fourth proportional to 70,407.15, 105,609.74 and 17,099.49 is: 25,649.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,407.15 : 105,609.74 = 17,099.49 : x
  2. Step 2: Convert to fraction form
    70,407.15/105,609.74 = 17,099.49/x
  3. Step 3: Cross multiply
    70,407.15x = 105,609.74 × 17,099.49
  4. Step 4: Simplify right side
    70,407.15x = 1,805,872,693.03
  5. Step 5: Solve for x
    x = 1,805,872,693.03/70,407.15
  6. Step 6: Final answer
    x = 25,649.00

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1.5x scale

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.