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Finding the Fourth Proportional to 157,471.75, 217,312.28 and 85,852.28

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Solution

The fourth proportional to 157,471.75, 217,312.28 and 85,852.28 is: 118,476.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,471.75 : 217,312.28 = 85,852.28 : x
  2. Step 2: Convert to fraction form
    157,471.75/217,312.28 = 85,852.28/x
  3. Step 3: Cross multiply
    157,471.75x = 217,312.28 × 85,852.28
  4. Step 4: Simplify right side
    157,471.75x = 18,656,754,655.50
  5. Step 5: Solve for x
    x = 18,656,754,655.50/157,471.75
  6. Step 6: Final answer
    x = 118,476.84

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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.