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Finding the Fourth Proportional to 612,544.85, 845,187.40 and 357,846.83

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Solution

The fourth proportional to 612,544.85, 845,187.40 and 357,846.83 is: 493,755.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,544.85 : 845,187.40 = 357,846.83 : x
  2. Step 2: Convert to fraction form
    612,544.85/845,187.40 = 357,846.83/x
  3. Step 3: Cross multiply
    612,544.85x = 845,187.40 × 357,846.83
  4. Step 4: Simplify right side
    612,544.85x = 302,447,625,830.77
  5. Step 5: Solve for x
    x = 302,447,625,830.77/612,544.85
  6. Step 6: Final answer
    x = 493,755.89

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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.