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Finding the Fourth Proportional to 291,709.81, 437,564.72 and 70,093.81

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Solution

The fourth proportional to 291,709.81, 437,564.72 and 70,093.81 is: 105,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,709.81 : 437,564.72 = 70,093.81 : x
  2. Step 2: Convert to fraction form
    291,709.81/437,564.72 = 70,093.81/x
  3. Step 3: Cross multiply
    291,709.81x = 437,564.72 × 70,093.81
  4. Step 4: Simplify right side
    291,709.81x = 30,670,578,346.38
  5. Step 5: Solve for x
    x = 30,670,578,346.38/291,709.81
  6. Step 6: Final answer
    x = 105,140.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.