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Finding the Fourth Proportional to 110,668,492.80, 166,049,978.40 and 53,131,147.20

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Solution

The fourth proportional to 110,668,492.80, 166,049,978.40 and 53,131,147.20 is: 79,719,400.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,668,492.80 : 166,049,978.40 = 53,131,147.20 : x
  2. Step 2: Convert to fraction form
    110,668,492.80/166,049,978.40 = 53,131,147.20/x
  3. Step 3: Cross multiply
    110,668,492.80x = 166,049,978.40 × 53,131,147.20
  4. Step 4: Simplify right side
    110,668,492.80x = 8,822,425,844,927,221
  5. Step 5: Solve for x
    x = 8,822,425,844,927,221/110,668,492.80
  6. Step 6: Final answer
    x = 79,719,400.00

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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.