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Finding the Fourth Proportional to 85,576.64, 118,075.74 and 51,576.08

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Solution

The fourth proportional to 85,576.64, 118,075.74 and 51,576.08 is: 71,162.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,576.64 : 118,075.74 = 51,576.08 : x
  2. Step 2: Convert to fraction form
    85,576.64/118,075.74 = 51,576.08/x
  3. Step 3: Cross multiply
    85,576.64x = 118,075.74 × 51,576.08
  4. Step 4: Simplify right side
    85,576.64x = 6,089,883,812.30
  5. Step 5: Solve for x
    x = 6,089,883,812.30/85,576.64
  6. Step 6: Final answer
    x = 71,162.92

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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.