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Finding the Fourth Proportional to 4,936,421.40, 7,391,346.06 and 4,936,421.40

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Solution

The fourth proportional to 4,936,421.40, 7,391,346.06 and 4,936,421.40 is: 7,391,346.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,936,421.40 : 7,391,346.06 = 4,936,421.40 : x
  2. Step 2: Convert to fraction form
    4,936,421.40/7,391,346.06 = 4,936,421.40/x
  3. Step 3: Cross multiply
    4,936,421.40x = 7,391,346.06 × 4,936,421.40
  4. Step 4: Simplify right side
    4,936,421.40x = 36,486,798,865,389.69
  5. Step 5: Solve for x
    x = 36,486,798,865,389.69/4,936,421.40
  6. Step 6: Final answer
    x = 7,391,346.06

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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.