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Finding the Fourth Proportional to 505,965.40, 759,239.70 and 190,648.60

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Solution

The fourth proportional to 505,965.40, 759,239.70 and 190,648.60 is: 286,082.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,965.40 : 759,239.70 = 190,648.60 : x
  2. Step 2: Convert to fraction form
    505,965.40/759,239.70 = 190,648.60/x
  3. Step 3: Cross multiply
    505,965.40x = 759,239.70 × 190,648.60
  4. Step 4: Simplify right side
    505,965.40x = 144,747,985,869.42
  5. Step 5: Solve for x
    x = 144,747,985,869.42/505,965.40
  6. Step 6: Final answer
    x = 286,082.78

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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.