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Finding the Fourth Proportional to 110,409.40, 165,614.10 and 99,328.60

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Solution

The fourth proportional to 110,409.40, 165,614.10 and 99,328.60 is: 148,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,409.40 : 165,614.10 = 99,328.60 : x
  2. Step 2: Convert to fraction form
    110,409.40/165,614.10 = 99,328.60/x
  3. Step 3: Cross multiply
    110,409.40x = 165,614.10 × 99,328.60
  4. Step 4: Simplify right side
    110,409.40x = 16,450,216,693.26
  5. Step 5: Solve for x
    x = 16,450,216,693.26/110,409.40
  6. Step 6: Final answer
    x = 148,992.90

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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.