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Finding the Fourth Proportional to 505,396.44, 697,452.30 and 279,041.40

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Solution

The fourth proportional to 505,396.44, 697,452.30 and 279,041.40 is: 385,080.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,396.44 : 697,452.30 = 279,041.40 : x
  2. Step 2: Convert to fraction form
    505,396.44/697,452.30 = 279,041.40/x
  3. Step 3: Cross multiply
    505,396.44x = 697,452.30 × 279,041.40
  4. Step 4: Simplify right side
    505,396.44x = 194,618,066,225.22
  5. Step 5: Solve for x
    x = 194,618,066,225.22/505,396.44
  6. Step 6: Final answer
    x = 385,080.01

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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.