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Finding the Fourth Proportional to 68,950,829.80, 103,426,244.70 and 48,543,495.40

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Solution

The fourth proportional to 68,950,829.80, 103,426,244.70 and 48,543,495.40 is: 72,815,243.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,950,829.80 : 103,426,244.70 = 48,543,495.40 : x
  2. Step 2: Convert to fraction form
    68,950,829.80/103,426,244.70 = 48,543,495.40/x
  3. Step 3: Cross multiply
    68,950,829.80x = 103,426,244.70 × 48,543,495.40
  4. Step 4: Simplify right side
    68,950,829.80x = 5,020,671,433,833,724
  5. Step 5: Solve for x
    x = 5,020,671,433,833,724/68,950,829.80
  6. Step 6: Final answer
    x = 72,815,243.10

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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.