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Finding the Fourth Proportional to 1,983,728.92, 2,973,102.90 and 1,072,875.08

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Solution

The fourth proportional to 1,983,728.92, 2,973,102.90 and 1,072,875.08 is: 1,607,965.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983,728.92 : 2,973,102.90 = 1,072,875.08 : x
  2. Step 2: Convert to fraction form
    1,983,728.92/2,973,102.90 = 1,072,875.08/x
  3. Step 3: Cross multiply
    1,983,728.92x = 2,973,102.90 × 1,072,875.08
  4. Step 4: Simplify right side
    1,983,728.92x = 3,189,768,011,685.73
  5. Step 5: Solve for x
    x = 3,189,768,011,685.73/1,983,728.92
  6. Step 6: Final answer
    x = 1,607,965.67

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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.