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Finding the Fourth Proportional to 1,106,502.70, 1,659,754.05 and 1,089,913.90

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Solution

The fourth proportional to 1,106,502.70, 1,659,754.05 and 1,089,913.90 is: 1,634,870.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106,502.70 : 1,659,754.05 = 1,089,913.90 : x
  2. Step 2: Convert to fraction form
    1,106,502.70/1,659,754.05 = 1,089,913.90/x
  3. Step 3: Cross multiply
    1,106,502.70x = 1,659,754.05 × 1,089,913.90
  4. Step 4: Simplify right side
    1,106,502.70x = 1,808,989,009,676.30
  5. Step 5: Solve for x
    x = 1,808,989,009,676.30/1,106,502.70
  6. Step 6: Final answer
    x = 1,634,870.85

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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.