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Finding the Fourth Proportional to 357,085.86, 535,631.80 and 90,846.60

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Solution

The fourth proportional to 357,085.86, 535,631.80 and 90,846.60 is: 136,270.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,085.86 : 535,631.80 = 90,846.60 : x
  2. Step 2: Convert to fraction form
    357,085.86/535,631.80 = 90,846.60/x
  3. Step 3: Cross multiply
    357,085.86x = 535,631.80 × 90,846.60
  4. Step 4: Simplify right side
    357,085.86x = 48,660,327,881.88
  5. Step 5: Solve for x
    x = 48,660,327,881.88/357,085.86
  6. Step 6: Final answer
    x = 136,270.67

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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.