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Finding the Fourth Proportional to 201,307,877.32, 277,799,243.45 and 121,969,911.95

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Solution

The fourth proportional to 201,307,877.32, 277,799,243.45 and 121,969,911.95 is: 168,315,069.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,307,877.32 : 277,799,243.45 = 121,969,911.95 : x
  2. Step 2: Convert to fraction form
    201,307,877.32/277,799,243.45 = 121,969,911.95/x
  3. Step 3: Cross multiply
    201,307,877.32x = 277,799,243.45 × 121,969,911.95
  4. Step 4: Simplify right side
    201,307,877.32x = 33,883,149,263,373,112
  5. Step 5: Solve for x
    x = 33,883,149,263,373,112/201,307,877.32
  6. Step 6: Final answer
    x = 168,315,069.01

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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.