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Finding the Fourth Proportional to 6,390,874.30, 9,581,645.85 and 2,602,407.10

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Solution

The fourth proportional to 6,390,874.30, 9,581,645.85 and 2,602,407.10 is: 3,901,710.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390,874.30 : 9,581,645.85 = 2,602,407.10 : x
  2. Step 2: Convert to fraction form
    6,390,874.30/9,581,645.85 = 2,602,407.10/x
  3. Step 3: Cross multiply
    6,390,874.30x = 9,581,645.85 × 2,602,407.10
  4. Step 4: Simplify right side
    6,390,874.30x = 24,935,343,189,725.54
  5. Step 5: Solve for x
    x = 24,935,343,189,725.54/6,390,874.30
  6. Step 6: Final answer
    x = 3,901,710.79

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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.