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Finding the Fourth Proportional to 885,100,920.20, 1,324,963,994.70 and 788,355,038.60

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Solution

The fourth proportional to 885,100,920.20, 1,324,963,994.70 and 788,355,038.60 is: 1,180,138,916.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,100,920.20 : 1,324,963,994.70 = 788,355,038.60 : x
  2. Step 2: Convert to fraction form
    885,100,920.20/1,324,963,994.70 = 788,355,038.60/x
  3. Step 3: Cross multiply
    885,100,920.20x = 1,324,963,994.70 × 788,355,038.60
  4. Step 4: Simplify right side
    885,100,920.20x = 1,044,542,041,185,328,768
  5. Step 5: Solve for x
    x = 1,044,542,041,185,328,768/885,100,920.20
  6. Step 6: Final answer
    x = 1,180,138,916.76

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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.