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Finding the Fourth Proportional to 86,672, 119,607.36 and 46,928

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Solution

The fourth proportional to 86,672, 119,607.36 and 46,928 is: 64,760.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,672 : 119,607.36 = 46,928 : x
  2. Step 2: Convert to fraction form
    86,672/119,607.36 = 46,928/x
  3. Step 3: Cross multiply
    86,672x = 119,607.36 × 46,928
  4. Step 4: Simplify right side
    86,672x = 5,612,934,190.08
  5. Step 5: Solve for x
    x = 5,612,934,190.08/86,672
  6. Step 6: Final answer
    x = 64,760.64

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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.