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Finding the Fourth Proportional to 113,779.84, 157,015.92 and 66,061.12

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Solution

The fourth proportional to 113,779.84, 157,015.92 and 66,061.12 is: 91,164.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,779.84 : 157,015.92 = 66,061.12 : x
  2. Step 2: Convert to fraction form
    113,779.84/157,015.92 = 66,061.12/x
  3. Step 3: Cross multiply
    113,779.84x = 157,015.92 × 66,061.12
  4. Step 4: Simplify right side
    113,779.84x = 10,372,647,533.03
  5. Step 5: Solve for x
    x = 10,372,647,533.03/113,779.84
  6. Step 6: Final answer
    x = 91,164.20

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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.