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Finding the Fourth Proportional to 127,915.58, 176,523.64 and 74,210.96

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Solution

The fourth proportional to 127,915.58, 176,523.64 and 74,210.96 is: 102,411.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,915.58 : 176,523.64 = 74,210.96 : x
  2. Step 2: Convert to fraction form
    127,915.58/176,523.64 = 74,210.96/x
  3. Step 3: Cross multiply
    127,915.58x = 176,523.64 × 74,210.96
  4. Step 4: Simplify right side
    127,915.58x = 13,099,988,787.09
  5. Step 5: Solve for x
    x = 13,099,988,787.09/127,915.58
  6. Step 6: Final answer
    x = 102,411.21

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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.