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Finding the Fourth Proportional to 994,856.40, 1,489,109.40 and 784,904.40

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Solution

The fourth proportional to 994,856.40, 1,489,109.40 and 784,904.40 is: 1,174,851.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,856.40 : 1,489,109.40 = 784,904.40 : x
  2. Step 2: Convert to fraction form
    994,856.40/1,489,109.40 = 784,904.40/x
  3. Step 3: Cross multiply
    994,856.40x = 1,489,109.40 × 784,904.40
  4. Step 4: Simplify right side
    994,856.40x = 1,168,808,520,141.36
  5. Step 5: Solve for x
    x = 1,168,808,520,141.36/994,856.40
  6. Step 6: Final answer
    x = 1,174,851.49

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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.