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Finding the Fourth Proportional to 153,590.61, 211,929.35 and 85,592.67

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Solution

The fourth proportional to 153,590.61, 211,929.35 and 85,592.67 is: 118,103.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,590.61 : 211,929.35 = 85,592.67 : x
  2. Step 2: Convert to fraction form
    153,590.61/211,929.35 = 85,592.67/x
  3. Step 3: Cross multiply
    153,590.61x = 211,929.35 × 85,592.67
  4. Step 4: Simplify right side
    153,590.61x = 18,139,598,489.90
  5. Step 5: Solve for x
    x = 18,139,598,489.90/153,590.61
  6. Step 6: Final answer
    x = 118,103.56

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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.