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Finding the Fourth Proportional to 107,580, 148,460.40 and 62,868

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Solution

The fourth proportional to 107,580, 148,460.40 and 62,868 is: 86,757.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,580 : 148,460.40 = 62,868 : x
  2. Step 2: Convert to fraction form
    107,580/148,460.40 = 62,868/x
  3. Step 3: Cross multiply
    107,580x = 148,460.40 × 62,868
  4. Step 4: Simplify right side
    107,580x = 9,333,408,427.20
  5. Step 5: Solve for x
    x = 9,333,408,427.20/107,580
  6. Step 6: Final answer
    x = 86,757.84

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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.