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Finding the Fourth Proportional to 153,354.60, 211,642.56 and 85,369.32

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Solution

The fourth proportional to 153,354.60, 211,642.56 and 85,369.32 is: 117,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,354.60 : 211,642.56 = 85,369.32 : x
  2. Step 2: Convert to fraction form
    153,354.60/211,642.56 = 85,369.32/x
  3. Step 3: Cross multiply
    153,354.60x = 211,642.56 × 85,369.32
  4. Step 4: Simplify right side
    153,354.60x = 18,067,781,430.26
  5. Step 5: Solve for x
    x = 18,067,781,430.26/153,354.60
  6. Step 6: Final answer
    x = 117,817.02

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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.