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Finding the Fourth Proportional to 538,876,980.60, 808,315,470.90 and 538,876,980.60

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Solution

The fourth proportional to 538,876,980.60, 808,315,470.90 and 538,876,980.60 is: 808,315,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,876,980.60 : 808,315,470.90 = 538,876,980.60 : x
  2. Step 2: Convert to fraction form
    538,876,980.60/808,315,470.90 = 538,876,980.60/x
  3. Step 3: Cross multiply
    538,876,980.60x = 808,315,470.90 × 538,876,980.60
  4. Step 4: Simplify right side
    538,876,980.60x = 435,582,600,330,859,200
  5. Step 5: Solve for x
    x = 435,582,600,330,859,200/538,876,980.60
  6. Step 6: Final answer
    x = 808,315,470.90

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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.