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Finding the Fourth Proportional to 77,365,312.80, 116,047,969.20 and 77,365,312.80

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Solution

The fourth proportional to 77,365,312.80, 116,047,969.20 and 77,365,312.80 is: 116,047,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,365,312.80 : 116,047,969.20 = 77,365,312.80 : x
  2. Step 2: Convert to fraction form
    77,365,312.80/116,047,969.20 = 77,365,312.80/x
  3. Step 3: Cross multiply
    77,365,312.80x = 116,047,969.20 × 77,365,312.80
  4. Step 4: Simplify right side
    77,365,312.80x = 8,978,087,436,962,766
  5. Step 5: Solve for x
    x = 8,978,087,436,962,766/77,365,312.80
  6. Step 6: Final answer
    x = 116,047,969.20

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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.