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Finding the Fourth Proportional to 7,430,811.10, 10,381,877.90 and 7,430,811.10

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Solution

The fourth proportional to 7,430,811.10, 10,381,877.90 and 7,430,811.10 is: 10,381,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430,811.10 : 10,381,877.90 = 7,430,811.10 : x
  2. Step 2: Convert to fraction form
    7,430,811.10/10,381,877.90 = 7,430,811.10/x
  3. Step 3: Cross multiply
    7,430,811.10x = 10,381,877.90 × 7,430,811.10
  4. Step 4: Simplify right side
    7,430,811.10x = 77,145,773,538,164.69
  5. Step 5: Solve for x
    x = 77,145,773,538,164.69/7,430,811.10
  6. Step 6: Final answer
    x = 10,381,877.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.