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Finding the Fourth Proportional to 121,319,082.10, 181,978,623.15 and 53,294,634.10

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Solution

The fourth proportional to 121,319,082.10, 181,978,623.15 and 53,294,634.10 is: 79,941,951.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,319,082.10 : 181,978,623.15 = 53,294,634.10 : x
  2. Step 2: Convert to fraction form
    121,319,082.10/181,978,623.15 = 53,294,634.10/x
  3. Step 3: Cross multiply
    121,319,082.10x = 181,978,623.15 × 53,294,634.10
  4. Step 4: Simplify right side
    121,319,082.10x = 9,698,484,134,801,040
  5. Step 5: Solve for x
    x = 9,698,484,134,801,040/121,319,082.10
  6. Step 6: Final answer
    x = 79,941,951.15

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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.