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Finding the Fourth Proportional to 371,261.53, 556,803.11 and 171,389.87

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Solution

The fourth proportional to 371,261.53, 556,803.11 and 171,389.87 is: 257,043.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,261.53 : 556,803.11 = 171,389.87 : x
  2. Step 2: Convert to fraction form
    371,261.53/556,803.11 = 171,389.87/x
  3. Step 3: Cross multiply
    371,261.53x = 556,803.11 × 171,389.87
  4. Step 4: Simplify right side
    371,261.53x = 95,430,415,502.98
  5. Step 5: Solve for x
    x = 95,430,415,502.98/371,261.53
  6. Step 6: Final answer
    x = 257,043.64

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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.