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Finding the Fourth Proportional to 28,898,978.80, 43,358,104.46 and 19,221,742.67

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Solution

The fourth proportional to 28,898,978.80, 43,358,104.46 and 19,221,742.67 is: 28,839,023.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898,978.80 : 43,358,104.46 = 19,221,742.67 : x
  2. Step 2: Convert to fraction form
    28,898,978.80/43,358,104.46 = 19,221,742.67/x
  3. Step 3: Cross multiply
    28,898,978.80x = 43,358,104.46 × 19,221,742.67
  4. Step 4: Simplify right side
    28,898,978.80x = 833,418,326,312,240.75
  5. Step 5: Solve for x
    x = 833,418,326,312,240.75/28,898,978.80
  6. Step 6: Final answer
    x = 28,839,023.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.