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Finding the Fourth Proportional to 699,037.55, 964,662.64 and 393,113.83

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Solution

The fourth proportional to 699,037.55, 964,662.64 and 393,113.83 is: 542,491.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,037.55 : 964,662.64 = 393,113.83 : x
  2. Step 2: Convert to fraction form
    699,037.55/964,662.64 = 393,113.83/x
  3. Step 3: Cross multiply
    699,037.55x = 964,662.64 × 393,113.83
  4. Step 4: Simplify right side
    699,037.55x = 379,222,225,068.31
  5. Step 5: Solve for x
    x = 379,222,225,068.31/699,037.55
  6. Step 6: Final answer
    x = 542,491.92

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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.