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Finding the Fourth Proportional to 89,574,436.80, 134,382,978.24 and 28,990,163.52

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Solution

The fourth proportional to 89,574,436.80, 134,382,978.24 and 28,990,163.52 is: 43,492,146.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,574,436.80 : 134,382,978.24 = 28,990,163.52 : x
  2. Step 2: Convert to fraction form
    89,574,436.80/134,382,978.24 = 28,990,163.52/x
  3. Step 3: Cross multiply
    89,574,436.80x = 134,382,978.24 × 28,990,163.52
  4. Step 4: Simplify right side
    89,574,436.80x = 3,895,784,513,482,202
  5. Step 5: Solve for x
    x = 3,895,784,513,482,202/89,574,436.80
  6. Step 6: Final answer
    x = 43,492,146.34

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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.