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Finding the Fourth Proportional to 81,466.96, 112,413 and 45,654.16

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Solution

The fourth proportional to 81,466.96, 112,413 and 45,654.16 is: 62,996.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,466.96 : 112,413 = 45,654.16 : x
  2. Step 2: Convert to fraction form
    81,466.96/112,413 = 45,654.16/x
  3. Step 3: Cross multiply
    81,466.96x = 112,413 × 45,654.16
  4. Step 4: Simplify right side
    81,466.96x = 5,132,121,088.08
  5. Step 5: Solve for x
    x = 5,132,121,088.08/81,466.96
  6. Step 6: Final answer
    x = 62,996.35

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1.5x scale

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.