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Finding the Fourth Proportional to 291,866.65, 437,776.64 and 129,810.92

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Solution

The fourth proportional to 291,866.65, 437,776.64 and 129,810.92 is: 194,706.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,866.65 : 437,776.64 = 129,810.92 : x
  2. Step 2: Convert to fraction form
    291,866.65/437,776.64 = 129,810.92/x
  3. Step 3: Cross multiply
    291,866.65x = 437,776.64 × 129,810.92
  4. Step 4: Simplify right side
    291,866.65x = 56,828,188,717.44
  5. Step 5: Solve for x
    x = 56,828,188,717.44/291,866.65
  6. Step 6: Final answer
    x = 194,706.01

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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.