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Finding the Fourth Proportional to 211,157.34, 316,512.42 and 98,743.14

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Solution

The fourth proportional to 211,157.34, 316,512.42 and 98,743.14 is: 148,010.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,157.34 : 316,512.42 = 98,743.14 : x
  2. Step 2: Convert to fraction form
    211,157.34/316,512.42 = 98,743.14/x
  3. Step 3: Cross multiply
    211,157.34x = 316,512.42 × 98,743.14
  4. Step 4: Simplify right side
    211,157.34x = 31,253,430,199.80
  5. Step 5: Solve for x
    x = 31,253,430,199.80/211,157.34
  6. Step 6: Final answer
    x = 148,010.15

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1.5x scale

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.