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Finding the Fourth Proportional to 505,556.32, 697,632.60 and 279,184

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Solution

The fourth proportional to 505,556.32, 697,632.60 and 279,184 is: 385,254.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,556.32 : 697,632.60 = 279,184 : x
  2. Step 2: Convert to fraction form
    505,556.32/697,632.60 = 279,184/x
  3. Step 3: Cross multiply
    505,556.32x = 697,632.60 × 279,184
  4. Step 4: Simplify right side
    505,556.32x = 194,767,859,798.40
  5. Step 5: Solve for x
    x = 194,767,859,798.40/505,556.32
  6. Step 6: Final answer
    x = 385,254.52

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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.