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Finding the Fourth Proportional to 201,894,835.56, 278,615,634.57 and 127,588,417.98

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Solution

The fourth proportional to 201,894,835.56, 278,615,634.57 and 127,588,417.98 is: 176,072,498.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,894,835.56 : 278,615,634.57 = 127,588,417.98 : x
  2. Step 2: Convert to fraction form
    201,894,835.56/278,615,634.57 = 127,588,417.98/x
  3. Step 3: Cross multiply
    201,894,835.56x = 278,615,634.57 × 127,588,417.98
  4. Step 4: Simplify right side
    201,894,835.56x = 35,548,128,039,280,096
  5. Step 5: Solve for x
    x = 35,548,128,039,280,096/201,894,835.56
  6. Step 6: Final answer
    x = 176,072,498.04

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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.