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Finding the Fourth Proportional to 479,646,407.96, 719,538,243.44 and 147,681,505.64

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Solution

The fourth proportional to 479,646,407.96, 719,538,243.44 and 147,681,505.64 is: 221,543,389.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,646,407.96 : 719,538,243.44 = 147,681,505.64 : x
  2. Step 2: Convert to fraction form
    479,646,407.96/719,538,243.44 = 147,681,505.64/x
  3. Step 3: Cross multiply
    479,646,407.96x = 719,538,243.44 × 147,681,505.64
  4. Step 4: Simplify right side
    479,646,407.96x = 106,262,491,153,551,552
  5. Step 5: Solve for x
    x = 106,262,491,153,551,552/479,646,407.96
  6. Step 6: Final answer
    x = 221,543,389.86

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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.