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Finding the Fourth Proportional to 93,606,641.80, 140,409,962.70 and 81,662,705.80

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Solution

The fourth proportional to 93,606,641.80, 140,409,962.70 and 81,662,705.80 is: 122,494,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,606,641.80 : 140,409,962.70 = 81,662,705.80 : x
  2. Step 2: Convert to fraction form
    93,606,641.80/140,409,962.70 = 81,662,705.80/x
  3. Step 3: Cross multiply
    93,606,641.80x = 140,409,962.70 × 81,662,705.80
  4. Step 4: Simplify right side
    93,606,641.80x = 11,466,257,475,359,072
  5. Step 5: Solve for x
    x = 11,466,257,475,359,072/93,606,641.80
  6. Step 6: Final answer
    x = 122,494,058.70

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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.