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Finding the Fourth Proportional to 505,964.40, 759,238.20 and 190,647.60

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Solution

The fourth proportional to 505,964.40, 759,238.20 and 190,647.60 is: 286,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,964.40 : 759,238.20 = 190,647.60 : x
  2. Step 2: Convert to fraction form
    505,964.40/759,238.20 = 190,647.60/x
  3. Step 3: Cross multiply
    505,964.40x = 759,238.20 × 190,647.60
  4. Step 4: Simplify right side
    505,964.40x = 144,746,940,658.32
  5. Step 5: Solve for x
    x = 144,746,940,658.32/505,964.40
  6. Step 6: Final answer
    x = 286,081.28

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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.