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Finding the Fourth Proportional to 663,596.45, 915,723.65 and 377,076.77

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Solution

The fourth proportional to 663,596.45, 915,723.65 and 377,076.77 is: 520,343.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,596.45 : 915,723.65 = 377,076.77 : x
  2. Step 2: Convert to fraction form
    663,596.45/915,723.65 = 377,076.77/x
  3. Step 3: Cross multiply
    663,596.45x = 915,723.65 × 377,076.77
  4. Step 4: Simplify right side
    663,596.45x = 345,298,114,269.23
  5. Step 5: Solve for x
    x = 345,298,114,269.23/663,596.45
  6. Step 6: Final answer
    x = 520,343.52

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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.