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Finding the Fourth Proportional to 521,028, 719,018.64 and 294,668.64

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Solution

The fourth proportional to 521,028, 719,018.64 and 294,668.64 is: 406,642.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,028 : 719,018.64 = 294,668.64 : x
  2. Step 2: Convert to fraction form
    521,028/719,018.64 = 294,668.64/x
  3. Step 3: Cross multiply
    521,028x = 719,018.64 × 294,668.64
  4. Step 4: Simplify right side
    521,028x = 211,872,244,783.45
  5. Step 5: Solve for x
    x = 211,872,244,783.45/521,028
  6. Step 6: Final answer
    x = 406,642.72

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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.