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Finding the Fourth Proportional to 14,539,992.19, 20,065,978.31 and 8,344,989.38

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Solution

The fourth proportional to 14,539,992.19, 20,065,978.31 and 8,344,989.38 is: 11,516,538.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,539,992.19 : 20,065,978.31 = 8,344,989.38 : x
  2. Step 2: Convert to fraction form
    14,539,992.19/20,065,978.31 = 8,344,989.38/x
  3. Step 3: Cross multiply
    14,539,992.19x = 20,065,978.31 × 8,344,989.38
  4. Step 4: Simplify right side
    14,539,992.19x = 167,450,375,791,829.22
  5. Step 5: Solve for x
    x = 167,450,375,791,829.22/14,539,992.19
  6. Step 6: Final answer
    x = 11,516,538.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.