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Finding the Fourth Proportional to 885,078,928.35, 1,236,691,852.65 and 885,078,928.35

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Solution

The fourth proportional to 885,078,928.35, 1,236,691,852.65 and 885,078,928.35 is: 1,236,691,852.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,078,928.35 : 1,236,691,852.65 = 885,078,928.35 : x
  2. Step 2: Convert to fraction form
    885,078,928.35/1,236,691,852.65 = 885,078,928.35/x
  3. Step 3: Cross multiply
    885,078,928.35x = 1,236,691,852.65 × 885,078,928.35
  4. Step 4: Simplify right side
    885,078,928.35x = 1,094,569,899,642,638,208
  5. Step 5: Solve for x
    x = 1,094,569,899,642,638,208/885,078,928.35
  6. Step 6: Final answer
    x = 1,236,691,852.65

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.