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Finding the Fourth Proportional to 406,123.90, 609,243.45 and 125,611.90

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Solution

The fourth proportional to 406,123.90, 609,243.45 and 125,611.90 is: 188,435.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,123.90 : 609,243.45 = 125,611.90 : x
  2. Step 2: Convert to fraction form
    406,123.90/609,243.45 = 125,611.90/x
  3. Step 3: Cross multiply
    406,123.90x = 609,243.45 × 125,611.90
  4. Step 4: Simplify right side
    406,123.90x = 76,528,227,317.06
  5. Step 5: Solve for x
    x = 76,528,227,317.06/406,123.90
  6. Step 6: Final answer
    x = 188,435.67

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1.5x scale

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.