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Finding the Fourth Proportional to 157,157.34, 216,882.46 and 85,539.96

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Solution

The fourth proportional to 157,157.34, 216,882.46 and 85,539.96 is: 118,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,157.34 : 216,882.46 = 85,539.96 : x
  2. Step 2: Convert to fraction form
    157,157.34/216,882.46 = 85,539.96/x
  3. Step 3: Cross multiply
    157,157.34x = 216,882.46 × 85,539.96
  4. Step 4: Simplify right side
    157,157.34x = 18,552,116,953.10
  5. Step 5: Solve for x
    x = 18,552,116,953.10/157,157.34
  6. Step 6: Final answer
    x = 118,048.05

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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.