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Finding the Fourth Proportional to 521,486.45, 719,591.81 and 292,011.83

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Solution

The fourth proportional to 521,486.45, 719,591.81 and 292,011.83 is: 402,943.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,486.45 : 719,591.81 = 292,011.83 : x
  2. Step 2: Convert to fraction form
    521,486.45/719,591.81 = 292,011.83/x
  3. Step 3: Cross multiply
    521,486.45x = 719,591.81 × 292,011.83
  4. Step 4: Simplify right side
    521,486.45x = 210,129,321,291.11
  5. Step 5: Solve for x
    x = 210,129,321,291.11/521,486.45
  6. Step 6: Final answer
    x = 402,943.01

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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.