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Finding the Fourth Proportional to 113,851.64, 157,114.66 and 66,116.72

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Solution

The fourth proportional to 113,851.64, 157,114.66 and 66,116.72 is: 91,240.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,851.64 : 157,114.66 = 66,116.72 : x
  2. Step 2: Convert to fraction form
    113,851.64/157,114.66 = 66,116.72/x
  3. Step 3: Cross multiply
    113,851.64x = 157,114.66 × 66,116.72
  4. Step 4: Simplify right side
    113,851.64x = 10,387,905,983.12
  5. Step 5: Solve for x
    x = 10,387,905,983.12/113,851.64
  6. Step 6: Final answer
    x = 91,240.72

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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.