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Finding the Fourth Proportional to 141,690.60, 212,852.70 and 118,362.60

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Solution

The fourth proportional to 141,690.60, 212,852.70 and 118,362.60 is: 177,808.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,690.60 : 212,852.70 = 118,362.60 : x
  2. Step 2: Convert to fraction form
    141,690.60/212,852.70 = 118,362.60/x
  3. Step 3: Cross multiply
    141,690.60x = 212,852.70 × 118,362.60
  4. Step 4: Simplify right side
    141,690.60x = 25,193,798,989.02
  5. Step 5: Solve for x
    x = 25,193,798,989.02/141,690.60
  6. Step 6: Final answer
    x = 177,808.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.