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Finding the Fourth Proportional to 111,775.60, 156,693.20 and 111,775.60

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Solution

The fourth proportional to 111,775.60, 156,693.20 and 111,775.60 is: 156,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,775.60 : 156,693.20 = 111,775.60 : x
  2. Step 2: Convert to fraction form
    111,775.60/156,693.20 = 111,775.60/x
  3. Step 3: Cross multiply
    111,775.60x = 156,693.20 × 111,775.60
  4. Step 4: Simplify right side
    111,775.60x = 17,514,476,445.92
  5. Step 5: Solve for x
    x = 17,514,476,445.92/111,775.60
  6. Step 6: Final answer
    x = 156,693.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.