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Finding the Fourth Proportional to 1,668,784.89, 2,302,825.36 and 943,784.67

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Solution

The fourth proportional to 1,668,784.89, 2,302,825.36 and 943,784.67 is: 1,302,367.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668,784.89 : 2,302,825.36 = 943,784.67 : x
  2. Step 2: Convert to fraction form
    1,668,784.89/2,302,825.36 = 943,784.67/x
  3. Step 3: Cross multiply
    1,668,784.89x = 2,302,825.36 × 943,784.67
  4. Step 4: Simplify right side
    1,668,784.89x = 2,173,371,272,455.23
  5. Step 5: Solve for x
    x = 2,173,371,272,455.23/1,668,784.89
  6. Step 6: Final answer
    x = 1,302,367.54

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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.