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Finding the Fourth Proportional to 861,411.82, 1,189,009.76 and 498,924.67

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Solution

The fourth proportional to 861,411.82, 1,189,009.76 and 498,924.67 is: 688,667.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,411.82 : 1,189,009.76 = 498,924.67 : x
  2. Step 2: Convert to fraction form
    861,411.82/1,189,009.76 = 498,924.67/x
  3. Step 3: Cross multiply
    861,411.82x = 1,189,009.76 × 498,924.67
  4. Step 4: Simplify right side
    861,411.82x = 593,226,302,134.78
  5. Step 5: Solve for x
    x = 593,226,302,134.78/861,411.82
  6. Step 6: Final answer
    x = 688,667.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.