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Finding the Fourth Proportional to 153,592.10, 211,931.41 and 85,594.17

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Solution

The fourth proportional to 153,592.10, 211,931.41 and 85,594.17 is: 118,105.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,592.10 : 211,931.41 = 85,594.17 : x
  2. Step 2: Convert to fraction form
    153,592.10/211,931.41 = 85,594.17/x
  3. Step 3: Cross multiply
    153,592.10x = 211,931.41 × 85,594.17
  4. Step 4: Simplify right side
    153,592.10x = 18,140,093,135.88
  5. Step 5: Solve for x
    x = 18,140,093,135.88/153,592.10
  6. Step 6: Final answer
    x = 118,105.64

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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.