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Finding the Fourth Proportional to 7,210,907.86, 9,949,461.91 and 4,269,264.34

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Solution

The fourth proportional to 7,210,907.86, 9,949,461.91 and 4,269,264.34 is: 5,890,642.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210,907.86 : 9,949,461.91 = 4,269,264.34 : x
  2. Step 2: Convert to fraction form
    7,210,907.86/9,949,461.91 = 4,269,264.34/x
  3. Step 3: Cross multiply
    7,210,907.86x = 9,949,461.91 × 4,269,264.34
  4. Step 4: Simplify right side
    7,210,907.86x = 42,476,882,934,551.29
  5. Step 5: Solve for x
    x = 42,476,882,934,551.29/7,210,907.86
  6. Step 6: Final answer
    x = 5,890,642.86

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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.