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Finding the Fourth Proportional to 157,174.40, 216,905.56 and 85,559.19

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Solution

The fourth proportional to 157,174.40, 216,905.56 and 85,559.19 is: 118,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,174.40 : 216,905.56 = 85,559.19 : x
  2. Step 2: Convert to fraction form
    157,174.40/216,905.56 = 85,559.19/x
  3. Step 3: Cross multiply
    157,174.40x = 216,905.56 × 85,559.19
  4. Step 4: Simplify right side
    157,174.40x = 18,558,263,806.20
  5. Step 5: Solve for x
    x = 18,558,263,806.20/157,174.40
  6. Step 6: Final answer
    x = 118,074.35

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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.