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Finding the Fourth Proportional to 99,157.48, 136,835.62 and 54,445.16

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Solution

The fourth proportional to 99,157.48, 136,835.62 and 54,445.16 is: 75,133.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,157.48 : 136,835.62 = 54,445.16 : x
  2. Step 2: Convert to fraction form
    99,157.48/136,835.62 = 54,445.16/x
  3. Step 3: Cross multiply
    99,157.48x = 136,835.62 × 54,445.16
  4. Step 4: Simplify right side
    99,157.48x = 7,450,037,224.60
  5. Step 5: Solve for x
    x = 7,450,037,224.60/99,157.48
  6. Step 6: Final answer
    x = 75,133.39

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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.