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Finding the Fourth Proportional to 1,364,913.76, 1,883,289.04 and 784,208.08

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Solution

The fourth proportional to 1,364,913.76, 1,883,289.04 and 784,208.08 is: 1,082,039.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364,913.76 : 1,883,289.04 = 784,208.08 : x
  2. Step 2: Convert to fraction form
    1,364,913.76/1,883,289.04 = 784,208.08/x
  3. Step 3: Cross multiply
    1,364,913.76x = 1,883,289.04 × 784,208.08
  4. Step 4: Simplify right side
    1,364,913.76x = 1,476,890,482,143.44
  5. Step 5: Solve for x
    x = 1,476,890,482,143.44/1,364,913.76
  6. Step 6: Final answer
    x = 1,082,039.41

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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.