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Finding the Fourth Proportional to 74,703, 112,073.70 and 25,455

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Solution

The fourth proportional to 74,703, 112,073.70 and 25,455 is: 38,189.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,703 : 112,073.70 = 25,455 : x
  2. Step 2: Convert to fraction form
    74,703/112,073.70 = 25,455/x
  3. Step 3: Cross multiply
    74,703x = 112,073.70 × 25,455
  4. Step 4: Simplify right side
    74,703x = 2,852,836,033.50
  5. Step 5: Solve for x
    x = 2,852,836,033.50/74,703
  6. Step 6: Final answer
    x = 38,189.04

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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.