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Finding the Fourth Proportional to 153,556.56, 211,905.90 and 85,576.32

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Solution

The fourth proportional to 153,556.56, 211,905.90 and 85,576.32 is: 118,094.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,556.56 : 211,905.90 = 85,576.32 : x
  2. Step 2: Convert to fraction form
    153,556.56/211,905.90 = 85,576.32/x
  3. Step 3: Cross multiply
    153,556.56x = 211,905.90 × 85,576.32
  4. Step 4: Simplify right side
    153,556.56x = 18,134,127,108.29
  5. Step 5: Solve for x
    x = 18,134,127,108.29/153,556.56
  6. Step 6: Final answer
    x = 118,094.12

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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.