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Finding the Fourth Proportional to 157,574.94, 217,454.81 and 85,955.28

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Solution

The fourth proportional to 157,574.94, 217,454.81 and 85,955.28 is: 118,619.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,574.94 : 217,454.81 = 85,955.28 : x
  2. Step 2: Convert to fraction form
    157,574.94/217,454.81 = 85,955.28/x
  3. Step 3: Cross multiply
    157,574.94x = 217,454.81 × 85,955.28
  4. Step 4: Simplify right side
    157,574.94x = 18,691,389,080.90
  5. Step 5: Solve for x
    x = 18,691,389,080.90/157,574.94
  6. Step 6: Final answer
    x = 118,619.05

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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.