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Finding the Fourth Proportional to 612,861.60, 845,051.60 and 431,515.52

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Solution

The fourth proportional to 612,861.60, 845,051.60 and 431,515.52 is: 595,000.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,861.60 : 845,051.60 = 431,515.52 : x
  2. Step 2: Convert to fraction form
    612,861.60/845,051.60 = 431,515.52/x
  3. Step 3: Cross multiply
    612,861.60x = 845,051.60 × 431,515.52
  4. Step 4: Simplify right side
    612,861.60x = 364,652,880,600.83
  5. Step 5: Solve for x
    x = 364,652,880,600.83/612,861.60
  6. Step 6: Final answer
    x = 595,000.37

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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.