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Finding the Fourth Proportional to 235,814.25, 325,423.11 and 128,385.03

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Solution

The fourth proportional to 235,814.25, 325,423.11 and 128,385.03 is: 177,171.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,814.25 : 325,423.11 = 128,385.03 : x
  2. Step 2: Convert to fraction form
    235,814.25/325,423.11 = 128,385.03/x
  3. Step 3: Cross multiply
    235,814.25x = 325,423.11 × 128,385.03
  4. Step 4: Simplify right side
    235,814.25x = 41,779,455,740.04
  5. Step 5: Solve for x
    x = 41,779,455,740.04/235,814.25
  6. Step 6: Final answer
    x = 177,171.04

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1.5x scale

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.