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Finding the Fourth Proportional to 6,668,742.90, 9,202,874.28 and 3,612,957.15

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Solution

The fourth proportional to 6,668,742.90, 9,202,874.28 and 3,612,957.15 is: 4,985,885.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,668,742.90 : 9,202,874.28 = 3,612,957.15 : x
  2. Step 2: Convert to fraction form
    6,668,742.90/9,202,874.28 = 3,612,957.15/x
  3. Step 3: Cross multiply
    6,668,742.90x = 9,202,874.28 × 3,612,957.15
  4. Step 4: Simplify right side
    6,668,742.90x = 33,249,590,430,477.10
  5. Step 5: Solve for x
    x = 33,249,590,430,477.10/6,668,742.90
  6. Step 6: Final answer
    x = 4,985,885.79

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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.