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Finding the Third Proportional to 42,975,408 and 66,641,688

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Solution

The third proportional to 42,975,408 and 66,641,688 is: 103,340,835.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,975,408 : 66,641,688 = 66,641,688 : x
  2. Step 2: Convert to fraction form
    42,975,408/66,641,688 = 66,641,688/x
  3. Step 3: Cross multiply
    42,975,408x = 66,641,688 × 66,641,688
  4. Step 4: Simplify right side
    42,975,408x = 4,441,114,579,489,344
  5. Step 5: Solve for x
    x = 4,441,114,579,489,344/42,975,408
  6. Step 6: Final answer
    x = 103,340,835.75

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.