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Finding the Fourth Proportional to 126,850,752, 190,276,128 and 31,112,640

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Solution

The fourth proportional to 126,850,752, 190,276,128 and 31,112,640 is: 46,668,960

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,850,752 : 190,276,128 = 31,112,640 : x
  2. Step 2: Convert to fraction form
    126,850,752/190,276,128 = 31,112,640/x
  3. Step 3: Cross multiply
    126,850,752x = 190,276,128 × 31,112,640
  4. Step 4: Simplify right side
    126,850,752x = 5,919,992,671,057,920
  5. Step 5: Solve for x
    x = 5,919,992,671,057,920/126,850,752
  6. Step 6: Final answer
    x = 46,668,960

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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.