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Finding the Fourth Proportional to 139,577,502.84, 209,388,978.63 and 41,219,158.38

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Solution

The fourth proportional to 139,577,502.84, 209,388,978.63 and 41,219,158.38 is: 61,835,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,577,502.84 : 209,388,978.63 = 41,219,158.38 : x
  2. Step 2: Convert to fraction form
    139,577,502.84/209,388,978.63 = 41,219,158.38/x
  3. Step 3: Cross multiply
    139,577,502.84x = 209,388,978.63 × 41,219,158.38
  4. Step 4: Simplify right side
    139,577,502.84x = 8,630,837,473,176,406
  5. Step 5: Solve for x
    x = 8,630,837,473,176,406/139,577,502.84
  6. Step 6: Final answer
    x = 61,835,448.39

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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.