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Finding the Fourth Proportional to 483,915.47, 725,725.58 and 128,883.29

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Solution

The fourth proportional to 483,915.47, 725,725.58 and 128,883.29 is: 193,285.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,915.47 : 725,725.58 = 128,883.29 : x
  2. Step 2: Convert to fraction form
    483,915.47/725,725.58 = 128,883.29/x
  3. Step 3: Cross multiply
    483,915.47x = 725,725.58 × 128,883.29
  4. Step 4: Simplify right side
    483,915.47x = 93,533,896,114.51
  5. Step 5: Solve for x
    x = 93,533,896,114.51/483,915.47
  6. Step 6: Final answer
    x = 193,285.61

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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.