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Finding the Fourth Proportional to 202,561.01, 279,526.64 and 111,915.03

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Solution

The fourth proportional to 202,561.01, 279,526.64 and 111,915.03 is: 154,438.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,561.01 : 279,526.64 = 111,915.03 : x
  2. Step 2: Convert to fraction form
    202,561.01/279,526.64 = 111,915.03/x
  3. Step 3: Cross multiply
    202,561.01x = 279,526.64 × 111,915.03
  4. Step 4: Simplify right side
    202,561.01x = 31,283,232,161.51
  5. Step 5: Solve for x
    x = 31,283,232,161.51/202,561.01
  6. Step 6: Final answer
    x = 154,438.57

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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.