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Finding the Fourth Proportional to 156,283,300, 215,670,955.92 and 87,605,668

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Solution

The fourth proportional to 156,283,300, 215,670,955.92 and 87,605,668 is: 120,895,822.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,283,300 : 215,670,955.92 = 87,605,668 : x
  2. Step 2: Convert to fraction form
    156,283,300/215,670,955.92 = 87,605,668/x
  3. Step 3: Cross multiply
    156,283,300x = 215,670,955.92 × 87,605,668
  4. Step 4: Simplify right side
    156,283,300x = 18,893,998,161,570,152
  5. Step 5: Solve for x
    x = 18,893,998,161,570,152/156,283,300
  6. Step 6: Final answer
    x = 120,895,822.92

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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.