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Finding the Fourth Proportional to 55,546,812.90, 77,574,219.30 and 55,546,812.90

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Solution

The fourth proportional to 55,546,812.90, 77,574,219.30 and 55,546,812.90 is: 77,574,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,546,812.90 : 77,574,219.30 = 55,546,812.90 : x
  2. Step 2: Convert to fraction form
    55,546,812.90/77,574,219.30 = 55,546,812.90/x
  3. Step 3: Cross multiply
    55,546,812.90x = 77,574,219.30 × 55,546,812.90
  4. Step 4: Simplify right side
    55,546,812.90x = 4,309,000,645,320,668.50
  5. Step 5: Solve for x
    x = 4,309,000,645,320,668.50/55,546,812.90
  6. Step 6: Final answer
    x = 77,574,219.30

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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.