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Finding the Fourth Proportional to 85,159.55, 117,525.43 and 47,433.80

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Solution

The fourth proportional to 85,159.55, 117,525.43 and 47,433.80 is: 65,461.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,159.55 : 117,525.43 = 47,433.80 : x
  2. Step 2: Convert to fraction form
    85,159.55/117,525.43 = 47,433.80/x
  3. Step 3: Cross multiply
    85,159.55x = 117,525.43 × 47,433.80
  4. Step 4: Simplify right side
    85,159.55x = 5,574,678,094.64
  5. Step 5: Solve for x
    x = 5,574,678,094.64/85,159.55
  6. Step 6: Final answer
    x = 65,461.57

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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.