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Finding the Fourth Proportional to 921,846,187.80, 1,382,769,281.70 and 921,846,187.80

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Solution

The fourth proportional to 921,846,187.80, 1,382,769,281.70 and 921,846,187.80 is: 1,382,769,281.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,846,187.80 : 1,382,769,281.70 = 921,846,187.80 : x
  2. Step 2: Convert to fraction form
    921,846,187.80/1,382,769,281.70 = 921,846,187.80/x
  3. Step 3: Cross multiply
    921,846,187.80x = 1,382,769,281.70 × 921,846,187.80
  4. Step 4: Simplify right side
    921,846,187.80x = 1,274,700,590,942,089,216
  5. Step 5: Solve for x
    x = 1,274,700,590,942,089,216/921,846,187.80
  6. Step 6: Final answer
    x = 1,382,769,281.70

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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.