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Finding the Fourth Proportional to 18,947,333.60, 28,421,000.40 and 17,678,290.40

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Solution

The fourth proportional to 18,947,333.60, 28,421,000.40 and 17,678,290.40 is: 26,517,435.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947,333.60 : 28,421,000.40 = 17,678,290.40 : x
  2. Step 2: Convert to fraction form
    18,947,333.60/28,421,000.40 = 17,678,290.40/x
  3. Step 3: Cross multiply
    18,947,333.60x = 28,421,000.40 × 17,678,290.40
  4. Step 4: Simplify right side
    18,947,333.60x = 502,434,698,529,716.06
  5. Step 5: Solve for x
    x = 502,434,698,529,716.06/18,947,333.60
  6. Step 6: Final answer
    x = 26,517,435.60

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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.