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Finding the Fourth Proportional to 153,577.56, 211,933.80 and 85,594.20

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Solution

The fourth proportional to 153,577.56, 211,933.80 and 85,594.20 is: 118,118.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,577.56 : 211,933.80 = 85,594.20 : x
  2. Step 2: Convert to fraction form
    153,577.56/211,933.80 = 85,594.20/x
  3. Step 3: Cross multiply
    153,577.56x = 211,933.80 × 85,594.20
  4. Step 4: Simplify right side
    153,577.56x = 18,140,304,063.96
  5. Step 5: Solve for x
    x = 18,140,304,063.96/153,577.56
  6. Step 6: Final answer
    x = 118,118.19

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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.